Terrible service from Vodacom again

I'm a current customer, my name is Sha Kistersamy. This is the second issue I'm having with Vodacom. On the 16th of August 2022 at 08.40am I made a call too set up a payment arrangement for R300 to be debited on the 20th and remaining balance to be paid after the 15th of October I spoke to Selina Masabatha and she ensured that only R300 would be debited this month. I wake up today and see two messages one is a debit of R300 and another debit of R1641.60. I phone today at around 08.50am speak to Mpho Molopo explains the situation and I advised her extra bank charges and if I reversed the second debit would Vodacom pay for bank charges and penalty if I reversed the debit she says no. Then she puts me on hold for 10 minutes with no reason why then comes back on the call with no response what so ever. When Vodacom wants their money they make it an issue but when their customers have an issue they don't want to help. I then request to speak to a supervisor she puts me on hold again and comes back and says Alfreda will call me after 10.00am I ask how sure are you she will call? Mpho replies I don't know if she will call you. All this is stress while I'm at work from Vodacom. My phone number is *** Vodacom needs to come to some sort of agreement with me or I will take this further. Bare in mind I'm using my airtime to call.