No one to assist with accounts

So after countless emails and phone calls, line disconnections and phone calls where they talk to me and hang up the phone, I am truly at a loss for words with this tracking company. I have a few vehicles on my company name and I didn't notice double deductions from Matrix (my vehicle being debited each month from my personal banking account and from my business account) and I can't sort it out. I also sold a vehicle and need to cancel 1 Beame device without any satisfaction. So I don't know what to do anymore, thinking of canceling the debit order so that they phone me in regards to my account, because if I can't get a hold of them in a months time, how fast will they be to pick up if I report my vehicle ******.