C Date/Inter Date review: Dating site cancellation

Like so many on here I am being threatened by email and letter with debt collectors and legal action from a mob call e collect. I joined the site, realised it was no good and tried to cancel my subscription which is made impossible so, I stopped my bank card so they couldn’t take money. Then the threats start to come in. Can someone please get this stopped. They have a reference number for my case as Re: [Ticket#[protected]] I have tried to reason with them and tell them I tried to cancel but the site wont allow it but they don’t care and think they can bully or intimidate you.