Bad service from Vox Telecom

I was charged for a sim which I never received, and for 2-months Vox tried to debit my account and I returned the debit order as I did not owe them that amount. The have now suspended my service due to non-payment. I have emailed and i called but to no avail. Finally, a credit note was supposedly passed on my account, but the credit needs approval and I and I have been waiting for 7 days with no acknowledgement that the process is now complete. To date my service are still suspended and the credit note is still not approved. Service Suck!!!!