13 Debit orders within 2 days

Nedbank has debited my account 13 times within a period of 2 days. I reported the matter immediately to the collections department. They say its going to take 3 - 7 working days to refund this amount to me. Who pays my rent in the interim thanks to Nedbank's fault? Who pays the R500.00 extra a day I have to pay for overdue rent??? Who pays all the service fees for all the other debit orders which could not go through due to Nedbank's systems issues??? Why must I be made to suffer for something which was not my problem. 3 - 7 days wait to get money back which belongs to me???? And the consultants all have a different story. The one this morning was that the refund was done, i must just wait for it to reach my account. Now I hear that the refund has been paid but not released as I must wait 3 - 7 days. The one refund was done within 2 days, why can this one not be done as quickly??? I need urgent assistance please