Extreme bad service received from April 2019

I'm writing regarding a complaint that was lodged with mtn 8 months ago they read the complaint but they never come up with a solution all the do is issue me with new ref no,s and I keep on repeating the same problem over and over again .my latest ***. and another ref no942614. Recently I complained about the debit order amount that's been debited to my bank account,that was a week ago I have yet to receive a proper excuse as to how they got to the amount seeing that the device a Samsung J2 with 2 simcards with data and airtime was forwarded to there offices from the eastgate branch .I am fed up with the inconsistency to say the least

My cell phone no *** I'd *** Email *** My bank is fnb cheq account