Impossible to get itemised billing report. Tired o

I called requesting an itemised billing data report. First call wasn't actioned, ended up calling about 8 times. Nothing! Heard all excuses including their emails don't work. Even emailed retentions and got a reply from customer care asking me for security pin and other sensitive info to be returned via mail. Heard nothing back since I asked why. I followed up again yesterday and getting ignored. Need my itemised billing report urgently. It's been almost a month of begging. Had mtn contract for well over a decade but now seriously considering switching.