Disgusted with poor service

I would like to expres my dissatisfaction about Cartrack about the bad service that i always receive from them.Sometimes last year i did phone them because on the app i could not get the correct location of the car when i try to locate its whereabouts the lady that i talked to said she did reset the device because there was an error it will start to function correct and it never did.On the 21st Oct i also called and spoke to one of their operators he told me there is the fault with the GPS and the relevant departement will phone me shortly to make an appointment to fix it till today no one contacted me.I Used to see negative comments on facebook about tracker from the people who experienced poor service i now see that their service is very bad i am considering cancelling my contract with them soon.