One buyer ( He is also a seller ) ordered me for some jewelry. First I showed him one sample after doing from his image. He approved and based on the approval all the other work has been done. I awake full night for his request and finished work. He says work is fine asked some revision and I have also done all the requested revision. Then he says he will come back after checking with his colleague. Just after one day he is showing me one image that his colleague placed an order with other seller with same images. He said that work is better then me. So he will cancel the order.
Can they two colleague place same images order with two seller at the same time ? And can they cancel one order once both seller work is done.
What should I do ?