MWEB NO Customer Service at all

The worst company ever! I am being billed for a data contract but I am not using any data from MWEB since the SIM card delivered to me LAST YEAR March was never activated, even though I contacted MWEB on several occasions (very frustrating, fruitless and expensive looooong calls) - I paid the R75 for the router every month and will carry on paying for it but I refuse to pay for a service I have not received and do not want to receive due to your bad service delivery. Please cancel my data subscription since I have never used it AND you cannot start billing me for something a year after I requested it AND that I have NOT been able to use at all. Please also reverse all data subscription charges as well. PLEASE RESOLVE THIS MATTER by reversing all data charges I have received.