Got to agree with the others regarding polishing, even if you still have doubts afterwards you'll still be in a better situation than you are now to sell the watch and recover your cost's.
One question I have for you
schnipples24,
Do you trust the seller after all this?
Even if he does surface again and agreed to a refund, I'd be extremely apprehensive sending the watch back. At one point he will have both your watch and money in his possession.
There may be a perfectly reasonable explanation to all of this but do you really want to take the risk?
One last point, if this was me and I took up one of the generous offers to polish the watch for free. If I then decided to sell it I would offer to pay for the cost of the polishing.
Good luck with what ever you decide.
__________________
In 1953 they used Rolex Oysters and oxygen on Everest.
In 1978 they managed without the oxygen.
Rolex Explorer -- Rolex Datejust -- Tudor North Flag -- Omega De Ville Trésor -- Tudor Black Bay GMT -- Omega Speedmaster Professional -- Tudor Black Bay Fifty Eight