Shocking lack of service.

One if my accounts was handed over to MBD. I settled the account in full, which included their admin fees. I phoned to confirm settlement and was told that no further debit orders would go off my account. A debit order did go off my account and I have spent almost a month trying to get my refund, after speaking to 4 consultants and sending numerous emails. They are quick to harrass when they want money but they don't want to know anything about refunds. This company and their service is shocking and disgraceful.