Called repeatedly. No messages left. Once when I answered, there was only silence.
Another time they asked for Mrs. X. When I demanded to know who they were, they hung up.

same as above...calls repeatedly...and never leaves a message

I returned the call.  A friendly voice picked up and when I said "You just called me," he apologized for the inconvenience and explained he was calling from Shopco Food Provisioners, a customized grocer/butcher delivery service based out of Scarborough, Ontario.  <http://www.shopco.ca/index.php>  He didn't flinch when I said I wasn't interested, and he promptly removed my phone no. from the calling list.  He did not ask for any further information.

Got a strange call, 69'd and called back with the above name "Shopco" weird..

I answered the phone the lady on the other end asked for Mr. or Mrs. Wallace...I said they weren't here can I take a message? Response: "no that's ok we'll call back."
Checked my caller id and the number showed up 4 times in less than 45 minute span...I then blocked my number and tried to call the number back several times and no one answered. Then called the number without blocking my number still no one answered...but someone called me and when I answered they hung up.