Double debit and pathetic service

Terrible service. They did not deduct my account and I made a manual direct deposit. This was a hustle to do and it was eventually sorted. And now this month they double deducted the account because a manual debit order was done by their collections department.

I have no idea why thus was the case and getting them to rectifythis is a problem as I keep getting transferred from department to department.

I'm fed up