Vodacom don't know what they are doing!!!

I paid my monthly installment at the end of October 2021 using my Vodacom app, the money was deducted from my bank account but the payment was never credited to my Vodacom account. I called them, they told me to email them the proof of payment to *** which I did - it has now been almost a month and my account has still not been credited. I am sick of their pathetic service and if this is not sorted out immediately I will move to another service provider.