Horrible customer service

Horrific experience, still cannot get any help, Background, 1. I did an online upgrade for a Samsung s22 ultra, R 899 package mega xs 2. Got one email saying they got my order and next steps is credit check with bank etc. 3. Got another email saying they lost me somewhere 4. Got some sms saying they started the credit check, and received conditional approval pending documents an agent will call me 5. Got another sms saying the check was canceled and agent will contact me 6. So I called 135, waited for 7 minutes got transferred to a Mondo call center agent 7. Mondo says he can't help me its gone for vetting and they don't know why, he says I should call 135 again 8. I called 135 again cause you know I love holding on the line for 17min at a time 9. The call center agent says i should call mondo offcourse that was going to be the answer, I told him I already spoke to someone, he then tried to help says we will have a 3 way call with them 10. So we called mondo, the 2 agents got into an argument between themselves with me on the line with the one saying he is going to report the other...the line cut just at the point where it sounded like I may get an answer 11. Sent an email to customer services last Thursday no response yet 12. Called in again thought I would apply again a helpful agent tried to capture my contract says its blocked for 3 months, cannot understand why when just today I got an email from mtn saying I could get an upgrade now for the phone I wanted have the email as proof. 13. What a miserable experience just to get an upgrade