Flying IFR in class G airspace gives you no more protection than anyone else bimmbling along VFR and not talking to anyone. As for receiving a Traffic Service, once again that's the lowest form of radar service available and subject to controller workload will you be advised of any traffic around you.
As the route you were flying took you into class D controlled airspace you would need to obtain an entry clearance from that controlling agency before you enter. As for being told to standby you seem not to understand that at times in ATC we can get quite busy.....the fact you hear nothing over the radio doesn't mean we are not busy...telephones etc.
Maybe a good time to try and visit an ATC agency to see that most of the time we are not sitting on our arses twiddling our thumbs.
