It is estimated that we receive a staggering three billion cold calls from telemarketing companies a year.
The Citizens Advice Bureau is getting a growing number of complaints from the public about cold calling and companies' techniques.
A BBC One current affairs documentary would like to hear about your experiences. Would you be happy to talk to a BBC journalist?

It is the first time the high-security facility has invited watchdog Healthwatch to speak to its residents.
They will be asked for their views on a range of healthcare issues, including GP services and dentistry.
West London Mental Health NHS Trust, which runs the unit, said it was a "groundbreaking initiative".
The announcement came after the hospital, based in Crowthorne and home to some of the UK's most notorious killers, was issued with a Care Quality Commission warning notice in December.
Carolyn Regan, chief executive of the trust, said receiving patient feedback was "crucial to ensuring we are providing a responsive and high-quality service".
She said: "Having an external independent organisation such as Healthwatch listen to patient feedback is even more valuable."
Mark Sanders, of Healthwatch Bracknell Forest, said: "Patients within a high secure forensic hospital should have as much say about the services they receive as any other patient.
"We are happy to be able to support that voice for patients and feedback to West London Mental Health NHS Trust to improve the services and environment offered."

Convicted killers Robert and Ian Stewart became so-called supergrasses at the trial of alleged members of the north Belfast UVF.
The trial judge said the brothers had lied in part of their evidence.
However, the Public Prosecution Service decided not to refer them back to the judge who slashed their jail sentences.
They had been given a reduced sentence, three years instead of 22, for the murder of Tommy English in October 2000 in return for becoming assisting offenders.
Jason Loughlin is challenging the PPS's decision.
The pair were held to have lied in court as they testified against Mr Loughlin and 11 other men ultimately cleared of all charges linked to the paramilitary feud murder of UDA boss Mr English in 2000 and dozens of other terror-related offences.
But despite acknowledging the Stewarts broke the terms of the deal, the PPS decided not to seek to have their original sentences re-imposed.
It was concluded that the breaches did not have a significant impact on the outcome of the supergrass trial in 2012.
Now, however, 38-year-old Mr Loughlin, from Newtownabbey, is seeking to judicially review the senior prosecutor's decision.
A panel of senior judges in Belfast was told on Thursday that the Stewart brothers should be brought back to the Crown Court under the terms of the Serious Organised Crime Police Act for breaching their assisting offender agreements.
A QC for Mr Loughlin, said the trial judge had identified their evidence as being "shot through with rank dishonesty".
But the High Court hearing, before Lord Chief Justice Sir Declan Morgan, Mr Justice Weir and Mr Justice Treacy, had to be adjourned after the last-minute introduction of a new ground of challenge.
The barrister contended that all of the alleged breaches by the brothers were not properly examined.
"In our submission the prosecutor has taken an impermissible shortcut," he claimed.
Following discussions the judges decided to adjourn the hearing until the autumn.
Acknowledging any delay could impact on the Stewarts, Sir Declan added: "They remain at risk and uncertain of their position until judgment is given."

The 29-year-old forward has signed what the Red Devils describe as a "long-term contract" at the AJ Bell Stadium.
McCarthy has previously played in Super League with Hull KR and Warrington, helping Wolves win the Challenge Cup.
"Tyrone is a really big signing for us. He is a bloke that leads with his actions," said head coach Ian Watson.
"Not only will he bring ability and experience to the side, but also leadership.
"His attitude and commitment to play for his team-mates is first class and that is exactly what we need at this stage of the season."
McCarthy, who has 12 international caps and played for his country at the 2013 World Cup, will be available for the Super 8s phase of the season, with Salford sitting third in Super League with one round of the regular season remaining.
Are you being bombarded by phone calls from call centres?
[NEXT_CONCEPT]
Psychiatric patients detained at Broadmoor are being asked for feedback on their care by an independent watchdog.
[NEXT_CONCEPT]
One of the men acquitted of murder in a UVF supergrass trial has launched a legal bid to have the two key witnesses face a possible return to jail.
[NEXT_CONCEPT]
Salford have signed Ireland international Tyrone McCarthy from Australian NRL side St George Illawarra Dragons with immediate effect.