Lau, stop messing about and open up a dispute. You have given them more than a reasonable amount of time to put things right and they haven't. If you give them an inch and they will take a mile, as was clearly evident from Jezz's dispute. Obviously Dustys promise for MVP to become more active on here was is bullsh1t.
If they were bothered about sorting this problem out with you they would have posted in this thread when they logged in the other day. Instead they posted up an advert in their Traders section before swiftly logging off.
You can um and ah about it until the cows come home, they will keep ignoring you and fobbing you off. You won't get anywhere unless you open up a dispute.
Sorry if that sounded harsh, it isn't meant that way