I have cancelled the cartrack on my car and made arrangements as I'm now not employed and experiencing financial distress

I have cancelled the cartrack on my car and made arrangements as I'm now not employed and experiencing financial distress. I've made my first installment via ozow on the 2nd of October. To my surprise I received calls from cartrack every day to make payment and to make it worse I received an SMS from cartrack where the billing went up from R349 to R500.