Teacherjh wrote:

because he was too busy.
noone was talking except me.


On that frequency. Controllers often work many frequencies, and do things
besides talk on the radio.

If you do not hear the controller talking then he is not busy, doesn't
matter how many freq's he has. Controllers do not switch transmitters
on and off to talk to different aircraft. What he may be doing off the
air is irrelavant. If he gets too busy he gets another body in there to
handle the landline.