An ethical dilemma

I am an honest person. I hate coercement. I am feeling pressured to do something that I believe is wrong.

Here is the dilemma. I ordered a gift for my nephew on Amazon from an Amazon market place seller. It arrived broken - wires were not connected  - not that it was smashed in transit. My brother tried to fix it. My nephew really liked it. They gave it back to me.

I was asked by Amazon to review my order and I gave it one star and said I was returning it because it didn't work.

I filed a claim with the seller who didn't respond in the three to five days or whatever time frame Amazon specifies. So I upgraded it to a complaint at Amazon where I received a quick reply and a promise to refund my money if I don't hear from the seller.

Yesterday when I came home from work I had an email telling me to modify my rating. Then I received a phone call telling me once I modify my rating they will give me a refund and I do not need to return the product. However they cannot issue a refund while feedback is present. And they did not leave their name.

So they want me to remove the negative rating and will issue me a refund. That way they get to keep a clean record with Amazon - which is important fro sellers because no one wants to buy products from a seller with unresolved issues.

I could just  take a refund from Amazon and ignore them. I could change my review (which I prefer not to do) and get the refund.

What would you do? The honest route is for the seller give me labels to ship back the product and then to issue me a refund.