Absolute disgraceful service after 20!years

I have been a client with MTN for 20'years. I have been on the top of the range contract in this time and now that my phone is not working after purchase 6 months ago. I took my phone in to see what was the reason it could not dial out with the reason\ not registered on the network". This was done on the 23 July as I had been calling the 808 number for days on end even though there was a strike. On the 23rd I established with the manager at The Glen store that had I been in there store on the Monday when the 6 month warranty for replacement allegedly lapsed. The manager then passed the buck and expected me to to go to Midrand to their repair centre. I told her I will not and then she said I must contact their insurance centre and again for days no response from them. I have had enough with this terrible service and I want a new phone as I spend big money to get the right service. I expect that in South Africa we should get service but it's not the case. I see in the business day newspaper today that the new MTN CEO is going to attempt to repair the bad service from MTN. I AWAIT WITH BAITED BREATH."""