Constant unwanted telephone calls

I recently enquired about insurance online.<br> <br> Shortly after I was contacted by 1 Life Direct.<br> <br> I declined their offer, as I had already found what I was looking for when their call was received.<br> <br> Since their first phone call earlier this week, I have been constantly contacted by their Call Centre/Sales Department.<br> <br> After again telling them that I was not interested, the phone calls have not stopped - sometimes continuing well past business hours.<br> <br> I have received over 10 phone calls from them today only. I have not answered any of these calls, however they have left voice messages - none of which make any sense, as it is only background noise in each message.<br> <br> These constant calls are not only annoying, but are now bordering on harassment.<br> <br> I have even gone as far as to block the number ***), however that has not stopped them from attempting to call me.<br> <br> Please remove my contact details from your database immediately.<br> <br>