They were trying to sell a CPA education course.  I am on the national "Do Not Call list".  Return number 813-657-5470.  Call received 1421 Hours on May 1, 2008.  She said she didn't know about Do Not Call lists.  I demanded my $15,000 penalty, and asked to be placed on their company Do Not Call list.

Received unsolicited call from this number on my cell phone. Please place me on their do no call list. I prefer to choose how I use my cell phone minutes.

As much as I hate telemarketers, this one is probably legit.  CPE Solutions provides continuing education products for CPA's.  CPA's have to have so many continuing education hours/year to maintain their license.  My wife is a CPA and has used them before (and as a customer, we get calls from them, too).  This number doesn't show up on many other services (like whocalled.us, etc), so doesn't have  the normal track record of scammy telemarketers.  I would guess that a CPA/CPA Firm either used to have your number, or your number was entered incorrectly in their customer database, so they probably do have a reasonable expectation that this number is from someone they have a business relationship with (hence, not a violation of DNC).