Not happy with standard bank service

I took out a personal loan a month ago and before the month was completed I settled the loan again. I contacted standard bank on both calls and via the app to let them close the account as it was paid off, however I was told that it will take up to 7 days. I paid Standard Bank in full! There’s no money I owe them but this morning they took off that money again. This should be able to be closed immediately! Am I even getting my money back that they just took from me?! This is daylight *******.