Fnb customer service

Fnb incorrectly debited my account and are now taking forever to return my money. I called numerous times speaking to different people and was told it would take 48 hours to be fixed up till date I have not received my money and this is absolutely frustrating. The service I received is pathetic and wrong info given. Definitely if the tables was turned Fnb would be phoning non stop for their money. I am highly frustrated with their services.