MTN not interested in helping

Phoned into MTN this afternoon at 16h38, 2 Dec. First of all, the representative could not hear me and asked me to get off my speaker phone. That made me quite angry as I needed to be on speaker to continue with other work! What a cheek! The reason I phoned was due to data vanishing for two months in a row now. I have never had data issues for many many years, I have WiFi at home and work, smart data saver is on with apps restricted from using background data. From my phone's data history which I have always found accurate, I should still have 350MB remaining. MTN rep was not interested in helping so I resorted to ending the call and coming to hellopeter. MTN has really disappointed me over the last few years!