so when you were deceived by the merchant you can do dispute it. and you can get a refund dude 
Only as long as the money has been sent as an official transaction which is taxed for either the buyer or the seller. There are a lot of sellers who'd like to trick the buyer into sending a paypal payment via the "send to family and friends" option to "save the taxes". This way nobody has to pay taxes but the buyer/seller protection by the support team does not apply as well.