How to secure Payment on Fiverr

[dappix]

I am a Nigerian who offers product sourcing and exportation services on Fiverr, and I take pride in my ability to source quality products and provide my clients with detailed information to meet their order requirements. However, as a seller, I face challenges when it comes to receiving payments on Fiverr, which makes me apprehensive and concerned.

What if the buyer is not being sincere in confirming the order as completed even if the process was done perfectly and all order requirements were fulfilled by the seller during delivery. In the world of exportation "Letter of Credit" is a good tool for a large volume of goods. But what if the order is below a thousand dollars? I would greatly appreciate any information on alternative payment methods or other Fiverr-aligned payment options that you may have on this topic. 

Please I want more USA contributors on this topic and other nationalities.

Thank you in anticipation.

Dappix