High Tech Roofing review: This man increased the total price of the whole job

I hired Eduart Bajrami High Tech Roofing and when this man showed up my house, he said that he would be able to start the job right now. He showed me different tiles and said that I would need to pay for materials upfront. I have given $10, 000 for the materials and he got this sum on the same day. After that this man faced some obstacles and failed to provide the materials. As well as he said that he would ask me to pay more, because he made some changes in our plan. Now he wants to get $30, 000 for the whole job, but he wanted $17, 000 before it.