Just being ignored

Had a problem 2 weeks ago where my phone just does not pick up any signal. No service whatsoever. Somehow this got resolved and it worked again for about a week. (Note that when this started I factory reset the phone as well) . The phone is still pretty much in a basic setup - minimal apps installed. On 26/10/2017 - I sent the @MTNzaService handle a message that it happened again. They "reset" my account and this did not help. Then they advised I phone 1555 - which is for data and internet queries. My problem does not lie with this, it is with the phone not picking up any signal.

If I am to take the phone in for repairs under warranty - I require my contract which I took via MTN Direct. Your outlets were not able to assist me - the Twitter handle is pathetic and flat out ignores me. I would literally rate MTN 0/5 if I could.

Please send me my contract so I can arrange for the phone to be looked at.