Unresolved Issue for more the a year - Worst Service!!! I am fed up

Good day

I am a 72 year old woman and has been with MTN since 2004 having 3 devices on my contract with them. On the 27th of January 2021 i made a card payment of R997 in store at Zevenwaght Mall MTN. In March 2021 was when my nightmare with MTN started. ive never missed a payment but in March they switched off my devices. I phoned and they said that i missed my January Payment. I send them the proof and they switched the service back on, but the issue was still unresolved because they did not allocate the money to my account. April the same thing happened, and so did May and June. June i went into the store to take may bank statement in as proof. I normally pay may account at the ATM but for that January i was visiting my Children and made the payment in store. To this day every month they put off my service and every month y have to travel from Joubertina to Jeffreysbay (where the nearest MTN Store is) to sort this issue out. That is 109km. i stay alone and when they switch off my phone every month i dont have any way of contacting my loved ones should anything happen to me. Every month they ask me for bank statemenst so to top everything off, the bank only gives you free bank statements for 3 months, thereafter you must pay R75 per month. I have to get someone to take me to a store 109km every month and have to pay for bankstatements every month to proof to MTN that i paid for JANUARY 2021, and till today my bill is up to date. I even went as far as paying the R997 that they say in in arreas with but the system has still not been updated so the system still shows that January 2021 is outstanding and my service keeps on being put off. I cant go on like this, because if something should happen to me in the middle of the night, how will i contact my children with i network that is off and its not my fault. I need someone to please help me sort out this matter. please contact Jefferys bay MTN they have everything of mine, my proofs and my bank statements. as i am typing this i already phoned MTN and they say my network is off because i am in arrears with my account, I've been a month behind for the last year. as i am typing this my network is off again. please allocate the money to the correct account