I buy a machine the seller says he going to send me firts he takes long time to send me video of Proof and in this video i see machine doesnst work good the energy was to low, so i send this video to another person he says the machine is not good i say this to seller he says that somebody new operate no good, i dont trust more i want my money, so i write to alibaba send this video i wating for answer of course seller is no agree what can i do thanks