Poor system

Worst experience I received my billing invoice on the 4th Dec 21 stating a huge amount of(R1362. 40) and I'm supposed to pay (R319) as per our agreement, I called customer care on the 7th Dec 21 to enquire about this and the agent who assisted me confirmed that there were system glitches about my previous payment of the month of November not being allocated to my profile yet she confirmed that the only amount I will pay was R319. Now on the 18th Telkom debited me same amount I called and enquired about of R1362. 40. I went to Telkom store in Forest hill city in centurion on the same day the 18th and I was told that they'll request for a refund with below case number ***2. Monday made a follow-up call to find out about the refund since there were no funds refunded yet only to be told about a 72 business hours time frame by an agent called Suzan Molefe now come today again I do a follow up and spoke to agent Sibonisiwe Hlela and she confirmed there was no feedback yet and to top up it she confirmed that again my payment wasn't allocated to my profile yet which she'll request it to allocated of which the process will take up to 5 hours and thereafter a refund can be made that can also take from 7-10 business day's. Now I have debits that missed payments all due to Telkom because of your inconveniences to top up it all I need to wait the whole of December to get my money refunded. Again if I reverse this payment I'll be charged extra R200 for arrears amount and a bank fee and question is who is liable to pay all this amounts?

Telkom I need my money asap I won't wait for 7-10 business days I have a family to feed and I have bills to pay.