5 days after wrong debit order amount, still no money back!

The wrong debit order amount got deducted from my account for my vehicle financed at Absa (Almost double my current debit order amount). 5 Days and 3 lengthy phone calls later and my money still has not been paid back. I understand mistakes happen, but when they do, especially when they involves peoples' hard earned money, you try and get it sorted as soon as possible...