<human>: I can't say that I am very aware as to how the chain of command works, or even how many different departments may exist withing a cable company, but here's the story.

As an RCN customer, it was some time ago that I was perusing their site and came across a cheaper promotional price offered for the internet and cable service that I currently have. With this information, I called RCN and asked what routes can be taken in order for me to receive this new price. The representative stated that he was incapable and that it was in fact, not possible. So I asked to speak to a manager just for good measure. From there they said "I don't know what difference it will make, but sure". After reaching their supervisor he kindly reiterated that I would not be permitted to take advantage of this new offer. That "sometime" in the future there will be bonuses offered to me in compensation for the inconvenience. 

So I decided to switch to Comcast/Xfinity. Now Comcast advertises lower internet speeds than RCN, but neither of the two advertise upload speeds (to my knowledge). What's the real truth with internet speeds offered via cable companies, and are these "high speed packages" just a ruse? 

Continuing on, I received a called not 10 minutes ago from an RCN representative. He is now offering the package from my original inquiry in order to keep me as a customer. When I explained that I asked for this courtesy once before, he reveals to me that neither the customer representatives nor their supervisors have knowledge of being able to actual honor such requests. 

I could spend some time and research this, but there are some of you out their with some insight already. So I ask: What's the real deal? Give me the low down. Are internet speeds reaching 75Mbps a hoax? Is any one company really that better than the other? And in what chain of command does quality information go on unannounced?

Summarize the given text in a few sentences.
<bot>: I want to switch to Comcast, another cable/internet service. My current provider, RCN, is offering a cheaper rate now that I am leaving. So who's actually better and why?