I had this same thing happen to me with another dealer on an ATV.They told me that the owner was out of town in meetings and when he got back he could make the decission on what to do.You can read the full account in dealer review forum.
It took a month for them to make it rite.If I were you I would start the ball rolling on filing a claim with the credit card company.Be prepared to hear every excuse known to man and everything they offer you will be to the benifit of them not you.
At least by filing a dispute they know your seriouse and that may give you some leverage.
I went to their web site and I couln't find anything about Lifan?
http://www.atvdiscounter.com/