Very Bad customer service!

My instalment went through on the 22 November instead of the 25th ( payday ) I raised my concern and it was reversed. I then noticed it was not deducted on the 25th then I made manual payment yesterday. They deducted today out of the blue and sent me a notification. My concern is they do things without getting my consent and it’s really an inconvenience! I called today at 16:00 and asked for help. Instead I’m being told that I should take this as a lesson for next time. I explained that I need the money urgently as I paid mfc double and my Nedbank banker has already sent proof of payment. I shared my frustrations but still I’m told I can’t be assisted I should wait for two - three days! I am being told I must still send to mfc the same proof of payment that my banker sent!