Yeah, Sirius Customer Support is inconsistent at best. Sorry to hear about your aggrivation.
Just so you know, SIRIUS has made long strides in service since I signed up back in like 2002. When I first got it, driving under a highway overpass at highway speed yielded a 3 second loss of signal penalty. In recent years, this has been much improved to where I rarely loose signal unless I'm sitting still (or driving very slow) under a bridge and in the summer driving through woods with a canopy of leaves.
Another thing that has improved, and IMO, continues to improve is the sound quality. When I first got it there was so much swirly artifact compression noise in the music, it was pretty bad actually. But I hardly ever can notice that on any stations anymore, even talk channels which were the worst offender of this.
Finally, in regards to listening to SIRIUS in an office, SIRIUS and XM both have ground based antennas in addition to their satellites. The satellites, of course, are their primary tool to getting music to you. However, in metro areas, they erect a repeater for the purpose of getting the signal in between and around buildings, tunnels, inside offices etc. If you are located near a repeater, you should be able to pick up a signal inside no problem... otherwise if you really want to go this far (and are allowed by management), you can buy 50' extension cables for SIRIUS antennas and you could wire one to outside a window. Being in NJ, like PA, the satellite brodcasts from the NW, so that's the direction you'll want to point. One note about repeaters... a year or two ago, SIRIUS got in some scuffle with the FCC and took maybe 30 or so repeaters down out of service nationwide. Most are still up, but unfortunately Harrisburg was one affected, so we no longer have a repeater. On the linked map below, you can search to see if you have a repeater in your area, but please note that Harrisburg is listed there as active when I'm almost certain it currently is not.
Hope this helps!
SIRIUS Repeater Map
http://www.dogstarradio.com/sirius_map.php
SIRIUS Satellite Orbit Map
(Please Note: Satellite in loop that appears to be above Canada is the active satellite at the time. While it appears to be going over canada, this map can't represent 3D, and it's actually going straight up away from Earth in a figure 8 motion. Because it loops upward away from Earth as it broadcasts, this is why SIRIUS satellite signal is 'stronger' than XM... less obstructions blocking it).
Live Satellite Position - View the current real-time position of Sir1, Sir2 and Sir3 Satellites...
Sir1 -
http://www.heavens-above.com/orbitdisplay.asp?satid=26390
Sir2 -
http://www.heavens-above.com/orbitdisplay.asp?satid=26483
Sir3 -
http://www.heavens-above.com/orbitdisplay.asp?satid=26626