Bad Service From Vodacom

I have paid off my vodacom contract early January 2020 around February 2020 i started asking Paid up Later as it was still appearing on my credit record as still open, i gave them phone call they said" will send paid up later for now within 48 hours and the itc will be updated within 21 days , i did call them after 2 months i was told the same, i did on the 13 September 2020 i was told the same and no paid up later i am receiving from vodacom, i did today i was told that we can see on the record that from early this year you were doing follow ups , let me escalate the matter and request them to give you a call because he also don't understand why i am not receiving paid up later because on the system it shows that all my requests was sent to the relevant department but there is no feedback. This service provider doesn't car of us , i decided to close all my cellphone accounts with them because of bad attitude towards customers. My problem is that i am not owing them any cent, firstly they generated quotation for settlement i paid before it expired, they didn't cancel my contract even though i forwarded proof of payment and the signed documents to be on prepaid, when i call them they said i must pay the last installment i said i have forwarded all the documents including proof of payment, they said it was not closed that is why the system need another amont in order for them to close, i asked who created that fault because i forward everything in time, i never got help i ended up paying again to avoid noise.....i won't even recommend this service provider to anyone else they are rude towards customers.