Total lack of upgrade service

MTN call me 8 times a day to upgrade. 9 June I complete an online upgrade from their app. They say 3-5 days for device to be delivered . Then I get an sms to say it’s on hold someone will contact me. Nothing for over a week. I eventually get hold of someone who says I need to forward my payslip, bank statements and ID copy. 3rd July all paperwork submitted, they tell me everything on track . 12 July I get an sms to say order is cancelled. I have called customer service they say they can’t help I must email complaints, which I did on the 13th July. Surprise , surprise haven’t heard another word from MTN. What an absolute waste of time , might be time after 20 years to move my contract to someone else who may care just a little more.