Mtn after service stinks

Absolutely horrid experience. My wife's phones been booked in for a warranty assessment over 3 months ago and since been approved. No attempt has been made to contact us regarding our new phone. The service centre refuses to assist. We have really lost faith in mtn. The service has really gone to the dogs. Very sad to say but they focus so much to to do the sales they forget how to retain a client. We have been patient enough. Hopefully we get some sort of help from this