Useless to contact online or otherwise

I tried to get online with Virgin Active with their app now for weeks. It did not recognize my login particulars. I tried to register a new account. They will be back in a flash it said. Two weeks later it's still the same. I went to the branch last Sunday. They could not help me also. They gave me a number to call, but the call centre only work certain hours, so I must call during that times. I am not allowed to make private calls during my own work hours, so now I am stuck. I can't find a email address online on any of their sites. But after hours their bank deduct the debit order and if the 1st is on a Sunday their system sends a sms to inform me it will go off the Friday. So I decided to stop the debit order and see what kind of response I will get