Not good enough...the woman went into a tirade calling me a Slumlord and some choice 4 letter words.

I have a small portfolio of 3-4 BR townhouses in Baltimore (edge of Charles Village) all located on the same block.

Is there a way to block him all together?

Search for multis, and send a letter to each owner, telling them if they are ever thinking about selling, you're looking to buy.

In my opinion by even writing the tag line you have puts a block in your own head that says the odds are stacked against you even more then being young. 

@Arianne L. send your letter certified mail return receipt requested.

Those materials are outdated and come from someone who hasn't wholesaled in year, if ever.They all tell you to do the same stuff with a slight variation - letters, yellow letters, post cards, band it signs, etc. 

My sister stays like 3 miles from the location and my cousin stay a few blocks.

They successfully did that in DC and got approval to do it in a residential neighborhood for a house that now rents to college students blocks from campus.

You can get a proof of funds letter from a hard money lender.