Unhappy customer

I had to change my student achiever account because I no longer qualify for it. Now suddenly I have multiple monthly fees which I get different explanations for everytime I call. First I was told that it was because the account has been changed to a mymo plus account hence the other higher bank charge then I called again and suddenly it's not a mymo plus account which means the 4.95 for the normal one is a lie. At this point I'm not even sure what kind of account I have and I'm being charged for every transaction I make.