Tired of Latency and Packet Loss

Same here in Omaha Nebraska.  I've tried everything and even a directly connected laptop to the modem.  The Call Center just tells me that they can see my modem.  Well, duh!  It's not dead!!  My upload speeds are for the most part fine and reporting in between 20-30 Mbps, but my download speed is about 5-10Mbps and it's usually over 200!  And now they won't dispatch techs!?!?!?!  I shouldn't be paying for this crappy service if they aren't sending anyone out to fix it.  I want my billing to be suspended until they can dispatch a tech to fix this **!!  At least send someone out to the outside box to see if the issue is there...