BILLING ENQUIRY / STATEMENT NOT UPDATED

i took up a contract in December with Telkom , it was 2 cellphones , so i knew i was going to be credited +- R600, to my surprise Telkom only debited R139 on the 31-01-2023, so i waited a day or 2 thinking they would debit again, they did not, so on the 2/02/2023 after a million calls (cause they so busy) i managed to get hold of an agent,who said that i had capped my debit at R139 therefore they could not debit the full amount of R598 ( dont ask me how this happen) anyway i did not get any sms or statement for January so i asked for an email statement which he sent, showing i needed to Pay R598, casue they could only debit R139, i had to do an EFT of R459, which i did after she smsd the banking details, today i got my statement stating i need to pay R960.04 which is clearly not correct and ive trying a million times again to get thru but its busy, this doesnt show my eft payement i made of R459, i also took out 2 insurances on both devices in January , the agent who called me said i would only need to pay R250 end of Feb, which i agreed, only to receive my statement today stating i would be debited R360, WHAT NONSENSE, yet i also sent an email to cancel my insurance 2 weeks ago.. ALL IN ALL I NEED TO PAY R360 PLUS R960 WHICH IS BULL****, as i was the one to called in to enquire on my on bill , i was the one you made payement yet it was supposed to be debited, i agreed on the cell insurance for R250 not R360- , this is not fair and i need this to be clarified