Hi, Vems! with that many cancellations, you must be trying to fly in Scotland! Never mind; you've got something pretty special up there that is worth looking into, deesideglidingclub.co.uk. Check it out and get a mate to drive there with you, but phone and ask about the weather prospects first, and probably a good idea to book as well. Sometimes spring conditions are excellent at Deeside. And there are special rates for students.
Meanwhile, here is my advice regarding RT. There are three very useful things to say to controllers:
Stand by!
Say again? and
Unable!
No seriously, do not be intimidated by radio. Controllers are there to serve you. Keep your message short and simple. If they want more information they will ask for it.
Just one more question, do they still make you use a plastic wheel calculator? In my day it was a required item on the course, never to be seen again once you had the rating!
Best wishes!