Poor Service

i Contact Cartrack, and ask them to remove my device and reinstall into my new car. The Lady said i must Cancel my Contract with them and i must pay R1700.00. Till date nothing happens. They charge me Ridiculous prices R800.00 just for a re fitment, and i`m not willing to pay that price for a third time in only 12 months.i Think they abuse the system to get rich, and if the system is not refitted by month end i will reverse all payments made by me.The previous fitment the Technician made a severe error and he took my car for a computer scan at Nissan Bronkhorstspruit, and in the posses he damaged my Car tyre and i had to fit both front tyres at a cost of R8000.00.. Now what will happens next?

Please assist.

Thank you.