Virgin Active unable to manage their contracts

I took out a gym contract for 1 year. Once it expired, I asked what happens next - I was told it was a month to month contract. In January of 2017 I gave them notice and stopped my debit order. Suddenly I was told I still had a contract and had to pay a "cancellation fee". They have subsequently handed over my account and I am harresed all the time including while i have been in hospital with kidney stones! No-one is willing to sort it out!