No one answers the phones

Good day.

I have been calling MTN branches in my area for the last hour without anyone of them answering. MTN Byaside mall just rings until it cuts out. MTN Tableview keeps saying there is no one at that extension. MTN Canal walk, both numbers, rings until it cuts out. I was finally able to get hold of one MTN shop at Tablebay mall to get my inquiry answered but they don't have stock of what I want. I find this kind of service from a provided to be highly frustrating and unacceptable. Why do I need to constantly call different shops to hope in getting an answer? After each call ends, I tried the next shop and then circled around. I have multiple contacts that are currently due or due in the next few days for upgrade, not that the shops helped with these answers either, I am currently considering to move my contracts elsewhere if this is the service I keep getting from MTN. Keep in mind that this is not the first time I have had this exact same struggle to reach an MTN shop on the contact number provided but this is the first time I am formally complaining about it.