[Edited out]
Scammers in P2P trade are fond of making incomplete payment, so if you are trading in any P2P platform always check very well to be sure that the buyer sent your money complete before you release your asset to the buyer because if you release your assets before finding out that the buyer sent you an incomplete payment, there's nothing you will tell the P2P platform that will make them recover your money for you because they believed the buyer sent you a complete payment before you released your assets to him or her.
You are very right. It is not good to always rush into releasing your coins without double checking your payment. Sometimes the scammers send an amount that resembles your real payment and upload the receipt. If you hurriedly release your coins, you will loose it forever. They can send 1530 in place of 15300 or they may send 15300 in place of 115300. If you don't double check, this amounts will flash through your head like you got the right payment and once you release your coins, you have lost it. Sometimes too, they first lodge a complaint seeking redress even when they know they never made the complete payments.
We should always be careful at all time when engaging in P2P in order not to fall into the hands of these scammers as they are on the rise recently.