Internet constantly goes out.. what are my options?

Hello,

I have 1gb and it's shit. It's impossible to work from home as the wifi constantly goes out. I'm in a pre-war building in Brooklyn NY so I understand it's possible to do with a few different factors. When I called customer support they just gave me a $22 credit and said "restart the modem" lol. I've done this already a few times but no luck.

What are my options? Thanks!