Stuck with Tracker's **** service with three vehicles and NO service!!!

Received a message saying Tracker has 'failed'to contact me. But I have NO missed calls, and NO emails received. Tracker phone line not working... can get thru but can't select an option. I then tried the online chat option... went thru many questions, then got a response saying Please try again later! I can't find a customer service email either. I'm battling to find service from this company for OVER A WEEK, and NOBODY at Tracker seems to give a damn!! I'm trying to find contact details for it's CEO... can't find that either!! Would love to cancel ALL three contracts with Tracker and move to another service provider, but Tracker will want a HUGE cancellation fee! I'm stuck with the WORST tracking service provider in South Africa... and don't even know if I'm covered?!?