Tracker. Thieving at its best.

I've been trying to cancel my contracts with Tracker for a few months. I called in to cancel the contract and was told to email certain documents through, the usual, company registration documents, company letterhead etc. I reasoned that the contract was agreed to telephonically, so the cancellation should be acceptable in a like manner. That was not happening. So I've emailed the cancellation letter to every address provided on their website, with the request to forward the letter to the relevant department. Twice. Nothing. No response whatsoever. I now use a smaller company that is more efficient, cheaper and actually responds to queries. No 36 month contracts allowing to opt out at any time. BUT.... I'm still being billed by the bullies at tracker.