<human>: Can you give me the gist of the text in a nutshell?

Made an account just to post this, and I'm rather excited to see some responses.
I have an online store that gets a decent amount of hits and sales. The items are non-tangible downloadable items so there is no physical items. These items are not free to me, I still pay a good percentage of their value (say 60%) However, I still send out confirmation letters with tracking to satisfy PayPal's lust for proof of everything. The couple months ago I had a good amount of orders from a PayPal account named "Nam Tran", which should of alerted me there, but he had a confirmed address and it all seemed well. I sent him a confirmation letter and that was the end of it... or so I though. A few weeks ago, I get a notice that I have a dispute so I put in the tracking info and think its done with. I get a notice from PayPal that the item never reached them(the confirmation letter), so the tracking info wont allow for Seller protection... leaving my account negative $250.00, and the other day another 2 of his orders where disputed leaving a grand total of $360. This was 7 orders over the course of months that they never caught on to... I think that because of their gross lack of any time of security that I shouldn't be forced out of business. My problem is that I have done over $20,000 in business with Paypal, and nearly $2,000.00 of that has been scammers @ 10% fraudulent payments that's a far stretch from their .5% that they boast about. So every time I get a dispute I still have to pay that 60% but made 0 profit. 

I've talked to them on the phone over 30 times on various topics, and they seem to be the most corrupt company I have ever dealt with.

My account sits -$350.00

Who has closed their account because of PayPal sketchy business practices? Let me hear your horror stories
<bot>: Owe Paypal $350 because of scammers. Paypal failed to stop scammer from ordering 7 times over 2-3 months.