shon7, may I offer my answer to your question?
It is the normal practice to have one radio on 121.50 to listen out for any distress calls and, if there is a spare radio, to have it tuned to 123.45 which is now the common air to air frequency. It is not unknown for the crew of one aircaraft to call another on 121.50 and request a transfer to 123.45 to discuss a matter such as you experienced. The correct option would be to call on 123.45 initially to make contact.
May be some help? I hope so!