Poor service from MTN

MTN has the Samsung J7Pro on their March special. To my amazement, KZN stores have no stock. Went to upgrade contract at one of the Durban stores on Sunday 10 March 2019. To date I have not received phone. Sent complain to MTN but no positive feedback. Also, called the call centre but they can't help. Phoned store but they don't answer phone. Drove to store on Thursday, 14 March 2019, and spoke to consultant, who told me he is still waiting for stock from JHB. Spoke to consultant today, Tuesday, 19 April 2019, told me to contact store manager or regional supervisor. Sent email but unfortunately the supervisor's email was incorrect. Decided to drive to store, spoke to manager. He told me its not the consultant's fault that the warehouse does not have stock and specials are while stock last. But there was no stock in KZN in the first place. Don't put something on special if you do not have stock in all regions. My complain via the MTN website seems to be ignored or maybe MTN no longer offer customer service and customer satisfaction. Should I be looking at changing networks after almost 20 years with MTN.

Still waiting for phone and upgrade.