Buyer Left negative FB - He said he would rescind neg FB if I credited him I did - he hasn't

[retrok-vintagej]

Hello - need advise

I sold a necklace in late Jan. 1 month later neg FB basically "piece of **bleep**" 

It is not and I stand behind all my items - I kept trying to contact him

but had to go through resolution center to get him to respond.  He said

if I credited his paypal he would send me the necklace and rescind the negative.

I refunded him - he sent the necklace back - but wont rescind the negative feedback.

He actually cut and pasted the initial feedback I left for him, sayind I gave you positive

I have messaged him once a week and have been very polite - no more replies from him.

So I know he doesn't care about this - but it burns my eyes to see negative feedback.

Question:  Can I do anything more?  Should I add on to my initial feedback that I left

for him warning sellers?  Or do I just let it go???

I do look at feedback when I buy, I think with what I sell and buy (vintage jewelry)

you need to know if a seller is misrepresenting.

Please I would appreciate any imput

Thank you!