M-sure... Not so sure....

I have tried on numerous attempts to make contact with this company as they refuse to cancel my debit order that has been going off my account for almost a year. I sold my car in December . made contact on 4 occasions via email and their website as I reside in singapore. Not a return email .. Nothing. Blackhole. I'm not even sure what this is for amymore. I've had to ask my consuktsnt who sold my car to , to make contact on my behalf and he confirms that they don't even answer the phones and when they do that can't assist. I've tried calling myself from Singapore and I waited for 10.minutes just for the line to drop. Aargghh