Will they "check themselves" from bad behavior when they see a professional company with professional services, legally reviewed lease, etc. managing their day-to-day?

I use a CPA, too, but I like to do my own bookkeeping throughout the year and send him a tax package quarterly to review.  

You need to review the assessment record for your property as there may be errors. 

Once you have found a few with good reviews, call them and tell them you are a wholesaler and ask if they are familiar with the process.

This spreadsheet was reviewed by our RE agent and his input was used on costs in that market.  

Also consider all lenders will require to review your insurance when underwriting a loan and it's likely a violation of your existing loan documents to let the properties go uninsured even if they didn't require insurance escrows. 

She ended up "finding" 5k that was put on other clients orders, she refunded 5k and still refuses to get on a call to review all the receipts for the remainder of unauthorized charges.* No calls accepted to review receipts: I have asked Jenny several times for the last 3+ weeks to get on a call to review the receipts and all of the items that are in the house, I have given her several deadlines to resolve the issue, she has never accepted any of my invitations to join any calls despite me pleading her to do so as my credit card payment is now due and has a 29.99% interest rate if not paid.I have found several people that were also affected with just 2 facebook posts.

If you haven’t already, try escalating the case and requesting a senior representative to review it.

In our area, the housing authority does annual inspections to (mostly making sure the landlord is keeping up the units) review the tenant and the landlord. 

Frankly, I'm surprised by all the positive reviews.