First of all, see if the liar is still there.
Negotiate now, ask for a refund, and call the police after the refund.
Call the police if you're not here.
Or see if the liar is at the door of Gome when he is doing propaganda. If so, you can also find relevant parties in Gome to understand the situation. After understanding the situation, decide whether to ask Gome for compensation or ask Gome to provide relevant evidence.
Because if they are at the main entrance, theoretically they should have rented Gome's venue, at least with the acquiescence of relevant personnel inside Gome, otherwise it is impossible to cheat at the door in such a big way, which will at least affect Gome's normal business, so they can't escape.
Of course, it doesn't matter if it is 100 meters away from the gate or even a back street next to the back door.
Specific analysis of the specific situation, in short, it is a liar, and the alarm is absolute.