Cancel my contract as I have NO network since March 2020

I am confuse so I contacted 082135 and they cant assist me as per your response. I request a number and then I get cut off. I tried cancelling my contract 30 days before contract end date and I was told to pay my arrears. I refuse to pay Vodacom, I have no network coverage since March 2020, I am not using the sim cards or numbers and the warning you guys send me on the 4th of August 2020 reflects that I do not owe you and hardware balance and a subscription fee of R84. So, I am being billed for airtime that I am receiving that I am not using and I cannot convert because I get No network coverage in my area. Yet, you guys want money from me for what. Is it my fault that I there is NO network coverage in the area where I stay because this was never a problem before. Why? do I need to pay for a service and I am not benefiting from it. Please cancel my contract with immediate effect and contact my back by latest next week Tuesday or I am taking this case to the Ombudsman via https://www.icasa.org.za/pages/consumer-complaints-procedure in case you think I am bluffing. Please contact me on ***