Discovery Bank is ***********

Not very happy with the service I get from a so called world class bank, I canceled my Wi-Fi subscription and by fault they still deducted an amount of R699 from my account, called the bank asked them to reverse the payment on the 31st said that i have a cancelation number as well as reference they said the payment shows pending and I must resolve the issue with the provider if they cant I must call back. Phoned the provider and they said they cant , phoned Discovery again now they say I need to dispute the matter and it can take up to 90 days and then still it might not be resolved. I am sorry but this is unacceptable!!!