Multichoice *****ing money from my account for 2 years and a not refunding me .

i upgraded my 2 decoders in April 2021 for the Explora ultra after receiving a phone call from them saying i can get an upgrade for free ( free installation ) for the new boxes and i was paying for 10 year for the full package something like 900 rds a month which i agreed on . The local installers charged me 2000 rds for the new boxes and the installer spend half day to make it work . After that my monthly bill went up to 1800 rds a month which i thought was high but i never spoke to them to discuss , i was too busy with other stuff and trusted them sadly . In November 2022 my monthly DSTV bill went up to 2200 rds a month so i called them to find you i had been charge from April 2021 for 4 decoders and ever since i called every month to cancell those 2 other decoders i never had and to ask for a refund for the almost 2 years where i paid 1800 RDS insttead of 1100 Rds or something like that .Icalled the installers in January who tried to cancelled the other boxes and ask them to refund me but they wouldn t....the installer told me to drive to the nearest DSTV office in Vredenburg which is one hour s drive , the lady said they are a franchise and she only can cancel one box , that is a month ago , then i called again the Johannesburg again and they kept putting on pose for 15 mn at a time.....i emailed them , the guy who rep**** said he is so sorry the 2 decoders are now removed from my account but no mention of my refund , then after called again and emailing again , a lady called yesterday her name Puleng offering me a 1000 rds refund when they have overcharge me for more that 10000 rds . I am appalled that even a big compagny like DSTV multichoice can treat customers like this , and not rectify mistakes made on their part quickly and efficiently .