Frozen Account Hours After First Sale

After making my first paypal sales through generating an invoice, my account was frozen few hours later. Paypal says it detect unusual selling activity which is absurd as this was my first ever sales on a paypal account that has been verified and using for years! and the infuriating thing is now I have to buy the product using my own money and ship out to the customer using my own money and hope paypal unfreezes my account. Paypal claim that I can get my account back if I provide tracking information and original sales invoice which is utter crap because the payment was just made few hours ago and they DEMAND IT for the account to be unfrozen! WHO IN THE WORLD can  ship out the item in just a few hours after payment is made without having to purchase stock first!?! Now I'm really worried I will never get my money back!

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