I didn't have comcast when I was having the issues. I actually missed ithem until recently. I recently switched to Exede Satellite as there are no other options in my area than satellite or 4G.

Well I was with verizon for my hotspot, but it was getting progressively worse. After they upgraded the towers it was impossible.  They finally sent an engineer out (after I threw a fit on their facebook page) & discovered I was not getting good service, that I am between 2 towers and pinging back and forth.  Everytime I did that I was dropped.  

Suffice it to say they let me out of the contract - no penalites. Furthermore they have offered a discount on a tablet for my jetpack.

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I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.
-Galileo