Slow Internet

We pay for high-speed internet, yet we don't have high-speed internet.  Why? 

I don't really know.

We got a new modem and Linksys router because we thought it might've been one of those, but neither fixed the problem.  The problem is with our ISP, I think, but they don't see what it is.  We went from high-speed internet access, overnight to dinosaur-age speeds - it's like dial-up all over again!  I am going to change our ISP this week I think because I've had it with waiting for our current ISP.  We've been like this for months!

I want blazing fast internet access for work and play (and by play, I mean my facebook addiction).