Over Debited!!

My contract/debit order with MTN was/is supposed to be R600pm, but for the first 2 (two) months MTN debited R900 then today they debited R1260.22 It's like I knew I will experience bad service with MTN when l first app**** for the phone last year Dec (2022) and some Indian lady (who was not even assist me) telling her black co-worker that I need to provide them with original pay-slips while her people (Indians) & Whites are only providing copies...and that is MTN The Glen Store...Maam you're NOT WHITE!!

Please MTN refund me NOW!!!