I searched their number and found out they are a company called InfoTech. I used their online chat function to request that my name/number be removed from their list and I was assured that it would be taken care. We'll see...

Continues to call about every day on work line.  Never leaves message, but you can hear other telemarketers in background

I am ignoring them, but they keep ringing! How on earth did they get my number!

I took a call from this number after a couple of missed calls.  I had registered on their website for free content and they told me that it's their policy to follow up and ensure that the information was received and make sure that it meets the need.  I asked how they get phone numbers and they said either from people that register or through Hoovers (the largest lead company in the world)

They are an Information Technology research firm (not marketing but they provide research and insight) to IT people.  If you're not in IT it's a waste of time - I actually did my research and they're ranked in the Top 10 IT research firms believe it or not.  So I looked at their service (I'm in IT and it sounded relevant) and it's solid.

These guys call all the time. Don't leave a message.  How can we report them for unsolicited phone calls?

Left angry voice mail.  Never said what company with nor phone # to call back.