Cartrack Unit

I installed the unit on August 2022 and this year 29 January,i realised that the unit is faulty and not responding then i lodged the call for the unit to be repaired but until today no one is willing to fix the unit,Every week i get a call telling me that my account is on errors but i paid for subscription.Cartrack service is very poor,they are only interested in money but service is very horrible.