Discovery Bank bad service all round.

So 20 days today and still waiting. Called the call centre think today was my 32nd call. Was told there is a note that the issue is being dealt with. Issue is a client of mine followed the new way of paying a beneficiary being me and the money is still not reflexing. So 20 days they sit with my money end of the month now time to pay your credit card but they have your money so they make interest and you pay more interest. How legal is this. I will be closing my account with Discovery Bank as soon as this is resolved. Bad service bad come back to client just bad overall.