Billing

I am writing this on behalf of my grandmother Emily Jacobs. She had a contract in place which expired on the 15th October and her upgrade started on the 16th October 2020. She was supposed to be billed a pro rata rate from the 1st - 15th October on the old contract and a pro rata rate from the 16th - 31st October on the new contract, instead she has been billed for the full month of October which is R399 and now they want to charge her for the full month of November including a pro rata rate for the 16days in October. She also has a Data Sim which is supposed to be R129 per month but she gets charged an additional 98/99cents on top of the R129. Please contact her to sort out her billing issues : Emily Jacobs , Cell number : ***.