standard bank poor service and misinformation givers struggles to pay me back my own money

dont go with this bank they give wrong advise and incorrect information, and will cost you to go into their banks multiple times to get something sorted, and the turnaround time is always 7-14 working days. i sent R16000 to my old credit card that was closed the 25th of oct by mistake, they 1st told me 10 working days and it will bounce back, this never happened. Now they saying after iv been to their branches twice another 7 working days for them to give my own money back to me not their money but it took me 24 hours to show my money went through to them. why does it take standard bank so long to pay money back which is not theirs 7 working days which could mean a maximum of 11 actual days?????