When I tried to ask for a refund I was denied, despite showing proof that the website was faulty.

Which is why I always send the listing to the sellers to proof read everything.

The Notice needs to be sent to each tenant by both proof of delivery required service from the post office as well as by certified mail to the last known address.

When you are going through the approval process- we do request liquidity or proof of funds.

The tenant has proof that the rent payment went through successfully and was processed.

FHA gets a bad rap because sellers and many agents think it's only for people who don't have the money so if I had 20 percent, but wanted to use FHA, I would present a proof of funds with my offer showing I have more money, but am using the FHA as a financial option so I can get an investment property as well somewhere else.

Banks like proof the funds were in a bank well before closing. 

Does notrequire proof that you were at fault.

I’m guessing she changed titles to dodge the SEC but I have no actual proof of that.  

Send a written notice: Send the notice by certified mail to document the date of termination and proof of receipt.