Pathetic *****ing Cartrack

I cancelled my service in the beginning of 2021, by November I am still getting bills from them. they eventually cancel my account and tell me to pay R1715.35. This is then paid but today I am still being asked to pay another R200.00 odd. This might seem little but considering I had to pay even when they did not give me service and kept taking money out of my account on previous occassions.