Surely replying to ATC saying, "I think you may be referring to me, I'm around that height and this is my estimated position", and finding that ellusive ident button on the transponder when asked to wouldn't have been that difficult?
Good idea but try:
'Centre ABC, with Ident, that may be me'
The frequencies get very congested with all the skydive calls plus the regular traffic. The controller that's looking after that airspace if they're on combine could be handling PJE at:
GLB
MRY
COR
NGB
EUA
irregularly you can add MER, AY & LTV.
If you were looking for that traffic as a result of the ATC concerns, then I would suggest the transmissions were indeed beneficial. Sounds like there was an airprox (correct me if I'm wrong), but were you responding to their actions or does your normal routine prevent you from using any other equipment in the aircraft (including maps or your radio)?
Seriously, you hear a controller trying to call you but you ignore them? Why?? Press the ident button and respond with your callsign only if you're worried about workload or attention.