Poor service

I have been an mtn customer with the same number, upgraded every 2years for the past +-10 years. Since last month and now this month i had my line suspended. I have been making payments the same way for the past so many years. Now i have been told after all these years that my statements are a month behind.This only started to happen after mtn changed their systems. Further to my disappointment i app**** for a 4g mobile router 100gb for R299 black friday deal on the 26/11 seeing as i purchase 20g a month for 699. *** to date today been the 14/12, I have not received feedback. Further to that i app**** for a new contract on the mtn app as my wife had bust her screen and I thought it would be a nice surprise for Christmas. My current contract is up for upgrade on the 8/1/21. This application was done on the 10/12 Ref ***9.