8005560011

Calls from this number all hours of the day and night.  No one is here when answered and no message left.  Very annoying, please stop!

I just did the same thing. Spoke to an exceptionally nice man with a easy-listing-radio voice. He promised to remove my name from all their lists...we'll see!

I have been getting these as well. Just doing some research now when they rang again. It's an American company doing market research on behalf of UK companies. They have spoken to me before son now when I answer they hang up. I let my wife answer so they spoke to her and she passed them onto me.
Tell them to take your details off there database and that if they don't you will take legal action against them through OfTel. If they call again then contact OfTel or BT to have them warned.
British companies take note. Bring your call centres back to the UK or we won't talk to you.

We get several phone calls each day from this number; however, we do not answer calls unless we know the caller or the caller/company is identified on the caller ID.  There is no identification made except for the toll-free phone number.  I checked the Internet for DTE's Home Protection Plan and sure enough, it is their phone number.  How and where can I report this incessant calling?  I read the post where someone called them back but they were not given access to anyone at DTE.

Add the number to your contact list, with a "z" in front of the name to drop them to the bottom.  Then go to options and check the "go directly to voicemail" option.  Since they won't leave a message - it essentially makes them go away!