Terrible service

My phone was given in for repairs on the 18-11-2015.the consultant said it would take two weeks to repair.after two weeks there was no feedback from the store.I went to the store and was told that the phone hasn't been dispatched.I went to the store two days later and was told that an app on my phone needed to be deactivated in order for the phone to be repaired.This was not communicated to me initially when the phone was first sent in.I had spoken to the manager who did not get back to me as promised and seems to never be available.I have received the phone on the 13-12-2015 and clearly isn't my phone which was only a couple months old.Terrible service and would not recommend taking any contract at Mtn.