Email scams.

Just because you assume someone is a guru or because it is a tool to help you in real estate it must be a scam, does not mean that is the case.  

Investor who talked unsuspecting seller into the scenario is long gone...Sub too is just flat dangerous to a Seller in any scenario really..

Can anybody charm in and try to make some sense if ABC is a scam or just some typical bad apple clients complaining like in every business?

They are scam artists.

The wholesaler doesn't want to give out information unless you demonstrate that you're legit.Technically sending out personal information and advertising a large bank account to someone through craigslist also make you a target of a scam, too so tread lightly.In order to get a proof of funds letter, your best bet is probably working with the bank that holds the money (or line of credit) you plan to use to invest.Also, consider a different approach in looking to meet the wholesaler for coffee in order to discuss more about their business and your criteria.

We were disappointed we could only find three that didn't look like scams, but I'm guessing that's mostly because we are new to turnkey real estate investing and that there are probably quite a few additional quality turnkey companies out there. 

The whole scheme is a scam.

I do though, love how we so quickly, just rape these people of any chance of spamming/scamming us.

Although some of this data is certainly available in the public record, in many cases it's not all that simple to gather that data from the public record.And then of course, when there are "feuds", the parties involved might try to pull something like what Mitch posted here:http://www.biggerpockets.com/forums/311/topics/60121-another-grant-deed-scam-If someone wants to volunteer that info, great - but I'll abstain from that.