Contract Messed Up

I am so frustrated with Virgin Active Head Office. I don't even know where to start, I have had a membership with them for over 10 Years contract number ********** 039, my number is ********** 269. Now last week on the 11 June I decided that it's time to make use of some benefits by linking my account with Multiply. That's when the horror began, the next day after signing up with Multiply via their sales consultant Ayanda Mabena in Sunnypark branch, my new card was not working. I thought it was probably because it was not properly linked. I then send an email to both Ayanda and |Eka the Club Manager to notify them that my card was not "activated". None of them rep****, On the 18 June I then phoned them and finally spoke to the Manager and he said there was a problem with their system and promised that my entry to the gym for the past few days would be captured manually and that is recorded in the email that he sent me. Later on that day Ayanda Mabena phoned me with some confusing story, according to her their system shows that I was in areas for between 2006 & 2008 but it was not ME who took up that contract with areas but the person took it on my name and was not faithful with the monthly payments. Now my concern is why was I not made aware of this issue because I have been with Virgin Active Tramshed before I joint the Sunnypark branch. Why is it now on me that somebody decided to sign a contract, it is not my signature on that contract therefore I cannot be held responsible for something that I did not agree on? If you take a look on the contract that I signed I have never missed a payment, isn't that telling you something? I am hoping that you will come up with a suitable solution to this crisis. Mabatho