Telkoms mistake

Good Morning, My name is Mohamed Iqbal Shaik Mohideen, In July 0f 2019 i app**** for a LTE wifi router with Telkom which then I was approved for a 24 month contract in August 2019. I was given the router and was told that I will pay only at the end of September 2019..which will be a pro rata fee for August and the fee for September. On the 3rd of September I received my invoice via email from Telkom with an amount payable of R35,14 (a full breakdown of R735,14 minus R700,00 which gives us the above amount)which was due by the 30 September 2019. I then called Telkom and asked for them to check my account and to confirm the amount I needed to pay, They(Telkom) confirmed the amount of R35,14 which was on they system and reflecting on my invoice. I then waited for the debt date which to my agreement with Telkom is the last date of the month to pass an then I called Telkom again in October to check if I still owe any funds for the month of September which I was told, that I don't owe any funds my balance was sitting at R0,00. In the month of October I received my bill which shows I owe Telkom R367,57 due by 31 October 2019 and this is the second invoice from Telkom which also show I have a R0,00 balance brought forward from September. On the 4th of November (yesterday) I received an SMS saying I need to pay an amount of R1102,71.

I then called Telkom Store ( at City view) and spoke to the Manager he then transfered me to the Billings department, I then spoke to a lady by the name of Samukelisiwe who assisted me. I then asked her to check my account and tell me the amount I'm owing as she took me ID as per above and check the system she told me the Amount of R1102.71 is out standing on my account which then she explained to me a break down of R735.14 which was payable at the end of September and the amount of R367,57 for the end of October, an that I also had to pay an Amount of R202 as a fee because of the debt order never clear in September which will be added to my November bill.. So I asked her why am I paying for something(R202) that I did call Telkom about and they mentioned the above to me..she then spoke to her manager, the feed back I got was that Telkom made a mistake my invoice of the amount of R700 that was supposed to be charged in September. And all they can do is remove the fee of R202 an I need to pay R1102,71 by the 7th of November or my account will be suspended till I pay an amount of R1102,71. Please can you help me as it was not my fault that the amount was not paid in September and October as I had the correct amounts in my account for Telkom to debt , I also have the proof on Not just one invoice but 2 invoices that shows I don't owe anything up until end October 2019 which was an amount of R367,57. I'm able to make an arrangement with Telkom to pay this amount but I don't have any funds to pay by the 7th of November as I'm only able to pay at the end of November.