Disgusting service

I cancelled my contract with them last year August 2024 via email. In April this year they sent me a letter of demand. I sent them another email to enquire as to way my contract was not cancelled. Nobody responded, in fact they never responded to any of my emails. I tried calling them, I am always on hold for 10 min. Even their WhatsApp number is under maintenance. Today I received a text message stating I have being handed over to the lawyers. I tried to call them again, I was just on hold