Just a simple phone call with mortgage officer at a bank (or a few) should help clarify how much you'll need for a down payment and what interest rate you might receive - or at what point a bank would be willing to help you refinance. 

Are you F2F or on the phone?

I have reached out multiple times and get a ringing phone, no returns on emails, and no response on my owners portal (the company's suggested way to make contact during the COVID shut down). 

Some agents are very responsive and like to communicate daily on the phone, while others prefer to just send bi-weekly email updates so make sure it's going to be a good fit.

Please call Joe  or Jane at - phone number -.The rent questoin is just a simplified way to get a motivated seller to call you back who is open to a creative deal scenario.  

What websites/subscriptions do you use for skiptracing, particularly for phone numbers, and for uncovering the actual owners of LLCs?

This will depend on how you breakdown your costs, but at a minimum, flip costs are broken down into Acquisition Costs, Rehab Costs, Carrying Costs (or Holding Costs) and Selling Costs, and you can break it down further (into sub-accounts) if you'd like.

I have no bills really other than a phone, internet and food.

Get on the phone and call, call, call.

The bank may be inclined to get an attorney involved to help stop this, or at the very least send some emails and/or make some phone calls to representatives.