Blue Labela connect - Allliance Call center. Prescribed accounts *****

I have had this phone account with blue label connect from 2017 and as far as the law goes the contract has prescribed but I have been getting calls from Alliance Call Centre services who says I owe Blue label, so in December 2022 and January 2023 I paid R480 and the debt never reduced so I asked d then to give me a settlement discount and they said they don't give discounts. In September 2023 I paid R400 and emailed them proof of payment and asked them to send me my statement so that I know how much I owe but they never rep**** to my emails and welhen I called I get told that the person in charge of my account is nit available they will give him a massage to call me back but never once did I receive his call.