XX/XX/XXXX my credit score was XXXX from XXXX XXXX from XXXX and XXXX from XXXX. On XX/XX/XXXX I received a denial letter for a credit card from Bank XXXX due to a collectionon my name sent to Focus Receivables Management by XXXX on XX/XX/XXXX for an amount of $XXXX owned since XX/XX/XXXX
I never had an account with XXXX under my name, the account we had as household was under XXXX name and was closed on XX/XX/XXXX. 
XXXX retrieved my name from the collection agency XX/XX/XXXX and removed the collection from XXXX before XX/XX/XXXX. As result I lost XXXX points on my credit score from XXXX. However, it was not removed from XXXX. The confirmation# XXXX for my dispute is XXXX 
XXXX did not contact me in regards to the charges ($448), but due to the length of time my name was at the collection agency, I lost many points. 
All my efforts to contact the billing department were not successful. Today, XX/XX/XXXX after being transferred seven times I spoke with a person that confirmed my name was removed from the collection agency and that my case is escalated. I have no way of recuperating the points lost due to this mistake made XXXX. As result of this mistake I got a denial on credit card application and I cannot apply for a new credit to buy a house.
I would need help in recuperating the point lost on my credit score for all XXXX credit agencies, please.