I have a relatively new phone number. The company cross-referenced my number to an old XXXX debt that is not mine. 
I have explained to the caller, twice, that this is not my debt and that they have the wrong person. Once I gave them that information I stopped communicating with them. They call everyday and leave a message that I owe money to them that I used to owe to XXXX. That they have been authorized by XXXX to collect and that I need to call them back and pay up. 
The name of the company is : Enhanced Recovery Systems,XXXX XXXX XXXX, XXXX , FL XXXX ( XXXX ) XXXXIf you do an internet search of this company you will find dozens of complaints against their tactics.