No paid up letter and still not removed from data

I purchased items last year sometime from home choice, i settled the account in Janaury 2016. I reqeusted a paid up letter where i had to call they said they will email and provide same and close the account. Also reqeusted them to remove my details from their data base but i keep on getting calls, sms emails and post. This irritates me and yesterday a lady called me and practically forced me to tell her whyi want to close it when i reqeusted it over 3 weeks ago. I'm so tired of them as their complaint department or customer service dont even help.