WORST COMPANY EVER!!!

I had an account which I paid for more than 5 years ago, I requested them to close my account and to this day I receive calls from them and they keep doing credit enquiries on my name which affects my credit score. They're help desks are useless and everytime their consultants call they just want to sell you something and not interested in any query you would like resolved. I honestly should have never given them my personal details.