I randomly received 3 very small amounts (totaling $1.20sgd) from this person, between the 12th- 13th of Feb 2020. I do not know this person, nor have I sold him anything. He requested a refund of 466.61 USD on 2 out of 3 of those transactions. It's very obviously a scam? How can he dispute for such a large amount when he sent so little?? How can Paypal side with him on this???? Need a little help here, not sure what to do now.