Pathetic ABSA

ABSA bank failed to put a debit order through my account on the 20th of March. I contacted them on the 24th of March to enquire as to why the debit was not yet presented. I was advised there seems to be a problem with the 20th debit order run, and that i should make an EFT payment, which i did immediately. On the 29th they ran a debit order through my account, although they were already paid. I require a refund back into my account within 24 hours, in order to pay my other obligations. I will never again make an EFT payment to them again, if they don't submit a debit order, they can wait for their money until their systems are out of the 1980's and into the 2022's