unhappy about service

bought a new car 2 month ago, when car dealer hand over my car, they said the car was pre installed with tracker device, then i decide to keep it and just hand over the contract to me. then nobody contacted me, i thought it was already activated, only when i tried to obtain my login details of their app, i found out they don't even have my profile. then i started to email and call them several times,funny thing is sales person answer the call within 1 seconds, but service consultant answered called after very long time. then After many attemps on exlaining the situation, they finally answered me that my document or profile has been s****ped, so if i wanted to continue with their service, i need to start from beginning...hell, no, how can i trust this company anymore if they are servicing their client like this???or i feel that they don't even want to have this client(me).