Virgin active

I joined the gym in march at boulders branch and I was told they have 3 month special , then I was told I will pay R200 for march, R266 for April and hundreds n something for May I forgot the exact figure. I then paid the first R200 then one month down the line I received the sms saying the branch is closing and members will be moved to another branch of which was far for me, I then received the call from Cape Town branch and I told them I am cancelling my membership because they are closing the branch and I can’t afford to go to the branch they are suggesting since it was far for me, I am now supposed that am receiving calls from lawyers about my account being handed over and apparently they claim that I owe them 4k something, why course I cancelled my membership for the reason that they are closing the branch