Cisco router

A few days ago we noticed that our wireless connection was slowing down. We reset the road runner router, we reset the cisco wireless router still speed is very slow. We unhooked everything and hooked our main computer directly into the road runner router and the speeds were incredibly fast so it meant that there was something wrong with the cisco system. After going into the program it did say that the speed is really slow. Contacted cisco system on the phone  and after she tried to sell me a program over and over again I finally told her I didn't want anything for my PC I just needed cisco to run as fast as it did. She says oh wait let me try something and the speeds automatically went fast. It makes you wonder if they just searched out all the IP addresses  that are attached to cisco routers and purposely slowed them down so you would call and they would sell you more stuff. Think about it.