Mess up with my contracts and over charging for your mistakes

Good day

I am so fed up with MTN it makes me want to cancel all my contracts and never look back. How do I access all my contracts? I go into store and they say phone customer care,I phone customer care and they say go into store now what do I do? I cannot keep taking each SIM card out rooters putting it into a phone then access the account... I can only access one number at a time .. I have 4 contracts at mtn... Im looking for a statement with all my contracts showing and each contract stating each amount,what is so difficult about that.. if I request a statement on my app all it sends me is the total amount (all my contracts added together) per month... I went in on the 29th to have one of my contracts *** (R 614) cancelled and put on pay as you go and to upgrade *** ( from R335 to R399 200gig data). Just for me to find out *** was put on a different contract of R399 a month My total amount for last month was R2906 now it has jumped to R4256... what the hell is going on? It's supposed to be a lower total amount seen as I cancelled one and upgraded the other to a R70 difference???? I cannot manage my different contracts all on one app.. When I ask for statement showing me all my different numbers and contracts I have on my name they just say sorry we can't do that...I need a explanation of what is happening on my account and why has my monthly amount gone up by more than R1000...mtn is useless in helping their customers... I want a breakdown of how many contracts is open on my name and how much each contract costs.. I also want *** rectified immediately and i refuse to be charged for MTNs mistake.. I refuse for you to debit my account with that amount.. rectify Ur mistake before you debit my account.. where does the extra more than R1000 come from? Quick to take our money for your mistakes but very slow to fix your mistakes..

Dewald Scheepers ***