RIDICULOUS SERVICE FROM MR MRPMOBILE

Good day, I am a MRPmobile customer for more than 2 years now. To my surprise with a new contract the same old problem of 2 years ago again MRPMobile wants me to pay them for a sim that does not work their service provider or network is not available, they tell me that they send the data and Airtime but it shows over and over again unknown Application and service provider not available so how again should I pay for service that i have not received. This is totally ridiculous to have the same problem after two years and now they want me to pay as the supposedly sim is blocked because I did not pay. How does this work. The sim has not work anyway WOW????