Privacy not respected.

I ordered a set of pullon chair covers about a year ago. Since then I have been hounded by Homechoice via phone calls and emails as well SMS's four times at least, 7 days a week by Homechoice concerning items I don't want. Iv'e blocked the number(s) but they still get round it, I've put the phone down on them, I've ignored calls, but they still come through from about 9am until they close every day.

How do I put a stop to this? They are infringing on my privacy, and if this is how they treat customers, I will NEVER order anything from again.