Unfair charges and no pro rata

I started viva gym before covid lockdown after lockdown I didn't immediately return to gym and I had no complaints. On twenty November 2020 I returned to viva and payed my full price expecting my money's worth, the consultant never offered me to pay my fee pro rata. On one December I received a debit order deduction so I complained to viva but the manager wasn't there the consultant different from the first one said I should have just payed pro rata. Therefor I said okay now they can give me my days for the full month also on pro rata. I looked for the manager and he was not around I asked for them to call me but no one rep****. Finally I tracked the manager and he said he can't help me therefore I notified him I'll close my account. They send me to the website for cancelation upon entering the website I found no place to terminate membership. I was off on holiday case pending but I send a request via email to ***. They didn't wanna close my membership saying I was in arrears I informed them fees were building cause I'm struggling to close my membership cause all of a sudden nobody knows how to help me.

So is it fair for me to pay full price for ten days or should I not get my days pro rata since they should have informed me of paying ro rata instead. I can't pay full price for ten days where I deserve a month, so now I can't cancel my membership cause all they want is more money saying I'm owing and I can't terminate my contract if I'm in arrears but I wasnt in arrears when I started wanting to terminate my contract. I won't pay another cent for this is unjust. They want full payment but won't give my full days and the consultant after the one who took my money said I should have payed pro rata but they never informed me but they won't give my days pro rata oh no it doesn't work like that if you take my money provide a service