Disconnected, Double Charged, pillar to post - no service

I paid the account in up in November 2023, was then double debit for Nov and Dec in Dec. In January I was again debited for Oct, Nov a third time for the same month in which I had no connectivity. I have been disconnected with no data since July 2023. I went into a MTN store was referred to call 135. After calling 135 was told to go instore and back and forth it continues. I have sent my proof of payment and copies of the bills reflecting duplicate and triplicate billing. I have had no feedback about a refund. I also have had no feedback or assistance in being connected since 2023. My night data is also not working yet I'm told I am out of data?