bad business practice

Good day

My name is Bilquees Van Zyl – ID ***. I have had issues with Multichoice DSTV since February 2020. I ordered the Ultra Explora decoder with the compact plus package. An installer with the name of Ricardo, Cell number: *** contacted me and said he has the decoder but the installation was cancelled. He could not tell me who cancelled it but he has told them to collect the decoder, which they did not do. Since then DTSV is billing me for a package and decoder that I did not receive and was never installed. I am still using my standard explora decoder on a compact plus service and have to waste my airtime every month to call them when they disconnect my service even though I pay my monthly subscription on time every month. Again I am sent an sms this month saying I paid short after being promised that the billing department sorted the issue. It has now been 7 months and my service keeps being suspended unfairly. PLEASE HELP AS I DO NOT KNOW WHAT TO DO ANYMORE.