POOR SERVICE & **** gadgets

I bought a signal booster for my ba*****t room. It took about 2 months to arrive instead of 7-10 days. on arrival, booster does not boost signal at all. I reported that problem and they requested a video. I sent a video then they just keep ignoring my emails. phone calls are not going through. I get to be waited by automated voice that finally says "the extension is not reachable, please leave a message" no answer for some weeks now.