Others either have a check sent right to them or have another piece of property the get this STAR rebate for.

Nothing like word of mouth referrals.Either way you definitely want a way to check/verify their work before hiring them.

You could check out a book by Dave Van Horn called Real Estate Note Investing.

Thanks for that shout out @Sean Graham. 

Check it out here: https://get.biggerpockets.com/momentum2025/

I have rented out this home short term before and have been successful but I don't have any experience with 12 month leases.  

Sams and Home Depot has some you could checkout.

So anyone can put together the courses and sell them just like any other RE Guru out there teach their tips and tricks.

After much research, I am interested in any insight or information on Clarksville Tennessee.

You might consider: Consulting a Real Estate Attorney – Your emails may possibly prove misrepresentation.Requesting Public Records – A FOIA request might reveal why the city denied you but later approved the duplex.Escalating to City Officials – Bringing this to local officials could expose inconsistencies.Exploring Tax Write-Offs – A CPA might help offset your financial loss, if it is possible.I’d definitely seek legal advice.