MATRICTELEMATICS

Good morning im Edith Adamson i have an tracker in my car but not happy!! the salesman told me its r230 per month but they deducted r453 when asking about the payments they cancelled my tracker demanding r3400 all i wanted was to bring my price to what was AGREED ON I CANT GET HOLD OF THEM MY EMAILS GO TO THE POSTMASTER WHAT DO I DO IM SOOOO NOT PAYING R3400 THEIR FAULT