I use to have a contract with XXXX in XXXX NJ and my sister in law too because I was married with her brother we finish having the same last name and the first name. We used to live in the same address but different apartment number. i do n't remember if it was a one or two years contract. I wait until finish and I give the manager of the club the letter that they ask for saying that I do n't want to renovate my contract with them and he make all the changes but my sister in law did n't she just decide to close the account she was using to paid her membership and from the XXXX of us I 'm the only one who has a social security number.When they call me I tried to explain everything to them but they guy on the phone keep telling me that I have to paid that money when he finally decide to listen to me he actually confirm that it was not me because the date of birth that they have in the sistem is not mine. But they call me again telling me the same thing I explain everything to them again and I told them that they are using my social security number to put me on collection for an account that does n't belong to me and I give them my sister in law phone number so they can contact her. But they never solve the problem and they keep me in collection for something that I do n't owe. I need help because This collection is affecting my credit score and I 'm not gon na paid for something that I do n't owe.