Poor customer service

The total lack of service from instore or phone in to have a phone black listed, is a problem when a phone has been replaced through insurance, as the new IMEI # does not match the one they have on their system. With at least three visits to stores and numerous calls, MTN is never willing to assist except state that you have to daily 135. Nobody from MTN is willing to call you as their customer back, instead you need to spend 20 minutes plus trying to get the matter resolved.