Handing over account CLI2159363 while the tracker was not working for more than a year.

Tracker is taking my account to debt collector,i phoned them 2 years ago to canacel my account as the car was no more in use and not moving anymore and they wanted me to pay a lot of money so that they cancel,but i disagreed.The car was not even moving anymore,even the battery at that care was taken off as the car engine was dead.And now they are taking me to a debt collector demanding i pay them R1926.88.This is unacceptable.