Unfair Credit Listing

In 2011 I app**** for gym membership with the above company. Within a week I called the to cancel as I was suppose to go work abroad. I called the gum to inform them that I will no longer be interested in their membership as there was a possibility to leave the country. At the time of calling I had never used their membership which was suppose to be free for first month. Their consultant requested that I sell my membership of which I refused as it is not my job, and I had not even used the membership. Gym Company has unfairly listed me as bad payer and my credit score has dropped as result. This is causing me a lot of inconvenience. I want them to remove me from the bad payer listing immediately. <br>