I have sent a parcel to the wrong person. Openedmy email ( not ebay site) and clicked on wrong email- previous buyer- and posted her some shoes meant for another buyer. ( both transactions within a few days). God knows how I didn't spot it, but selling fees were similar etc and I just didn'tlook carefully.
I have got 100% feedback over 130, so it's not as if I do this often!
I have emailed both of these people asking if a)she would mind forwarding the parcel if I supply postage costs and a label, plus a bit extra for inconvenience and b) sorry for any delay and will refund if it doesn't work out.
I have also tracked down the phone number of the person I sent the parcel too by mistake- would it be OTT to call her and ask what she'd like to do- or would you stick to email- I am afraid she might not open her email for ages- but I could write.