Worst experience and service ever

I have requested to cancel my tracking device since the 21stof January 2022 to the following email address *** with no response back, again on the 9th of March to the same email address then on the 1oth of March Donald Moseamedi in Customer Services escalated the matter to the cancellation department *** and still with no response and further assistance I sent an email again on the 13tth of April to *** as I was advised that she will be able to assist until I received a call that I have been handed over for being in arrears with Netstar but I have cancelled their services. the worst part is I tried calling them numerous time and all i get is an sms with a case number CAS-***.