Home internet range

When I purchased my home internet plan, I was promised that it is the best, biggest range, most high speed package that Xfinity offers. No one downstairs gets any internet. I researched and found that Xfinity provides a Wifi Boost Pod at no additional cost to extend the network. I have been trying to talk to a REAL person about this but all I get every time is a bot that doesn't answer any of my questions. I have gone into the Xfinity store multiple times and the guy keeps telling me to resort to the phone number that leads to a useless bot. Horrible customer service! 

I read that I have to make a post in order to send a direct message so I can get in contact with a real person so here it is.