Poor customer service

So I made a payment to Mtn and was given a turn around time of 72 hrs for my account to be in full working order again. I called today only to be advised by a consultant (female) named Clarence that they just give the turn around time but they can take longer and then I request to speak to a manager and she tells me there is no manager available, as I work in a call Centre and know that excuse I said I'll hold for a manager and she decide to tell me I can hold till tomorrow for a manager.