bad service

I recently took out a loan with standard bank. After receiving the funds, the bank started making weekly deductions from my account. After approximately 20 calls I had an agent who confirmed that it’s an error on the bank side that the debit was incorrectly loaded as weekly instead of Monthly. She did correct this on the 1st March 2019. She asked that I call in on Monday 4th March to request a refund, after being transferred from agent to agent and also being told that I must go into the bank, one agent logged a query and assured me that my refund will reflect in my account within 24 hours. Not done I called after 24 hours only to be informed that it will take between 24 to 48 hours, to date nothing has been done.

Is this the service that we pay for<

Please immediately credit my account with the R521.00 x 2 which was *******ly debited from my account.