We are an electronic DIY supplier located in Shenzhen china and we sell various electronic sub-assemblies for DIY.
The buyer named Matt Bard bought one such item in 11/29/2014 for the price of $109.99 plus $19.99 shipping. Few weeks later he claimed that is not working properly sometimes and we helped out to identify the cause. He replied with delays so that in May 2015 we asked to return the item for an exchange or refund. He claimed that was shipped out but could not provide a tracking nr. Eventually he gave us an invalid number and put pressure on me to refund all what he paid plus shipping the item back, $129.98+$20. We asked several times for a proof of posting, posting receipt or anything which can prove that the item was indeed sent back to us. His replies were more and more aggressive each time and he filled a charge back claiming that we cheated him.
Moreover, he consistently write bad reviews on bulletin boards, blogs and several places on internet using his real name on some of them and fictive names on the others trying to affect our business.