Pay back my money debtbusters

I settled on of my accounts and an excess amount of R2500+ was taken from my account erroneously against me advising them not to debit the amount. I was advised that they require 7 days to resolve this and ensure my money was returned to me, however they failed to do this. I have called (takes me 20 mins to get through to a consultant) only to be told for the past two weeks that I will be called back. Today I was again advised earlier this morning that the team leader will call me back and I have not received a call yet. They cannot give me an answer as to when I will receive my money and shift blame and say they waiting for Wesbank. Wesbank did not incorrectly deduct money from me!!! Wesbank did not take my money so debtbusters should be able to give me an answer as to when I am getting money back. I am not getting any joy from them and it's been close to a month that I am waiting for my money to be given to me.