What exactly do you mean? A company that accepts and receives payments through bitcoin?  Its the company that is the issue here and you have to find out whether or not the company is fake or real,if you are going to have some sort of deal with the so called company. By finding out i mean that you have to do research,talk to a few trust worthy people,get to know about the company and then do whatever necessary. Also ,please do improve your interrogating skills,because your question leads to a lot of different meanings,so its hard to understand and assume what exactly you are trying to say.