I'm sorry he hasn't called yet, but he could be away on leave or very busy or any number of reasons. It doesn't mean he doesn't care. Did you tell him what you wanted when you left a message??
I've found that some Ts and Drs are hopeless at returning calls, not becuase they don't care but because they are disorganised, busy etc. I've found the best approach is to make an appointment and see them, and they are always happy to see you, even if they can't do anything specifically to help, and they have a dedicated appointment to sort out your problems instead of trying to did it in between the million other things they have to do.

You said you connected with him, maybe make an appointment to see him and get your T to call this other guy he referred you to - it would be easier for you if this new person had some background and if he is really good and booked up, it might be easier to get an appointment with him if your T calls.

My T makes all my Drs appointments etc for me because she knows I wouldn't do it. I feel like an idiot sometimes but that's how it is.

Good Luck