These folks are out of controll!  AND they want way too much information to get you off their calling list.  I filed complaints with the FTC and Ohio AG office.  Here is an idea one of my employees had...

Return the favor, send an email to all your contacts saying your child is doing a reasearch project to see how long it takes an email to get accrosss the US. Telll them PCA is going to tabulate the data so your contacts need to send an emill with their first name and home state only to [email protected] .  Then they should forward the email to ALL THEIR contacts too.  PCA's server will be slamed with pointless emails in just a few days.

Sounds like fun