Hello, if you have any questions about clearing please post them here!
Alternatively, their hotline number is:
0800 376 1800 (from the UK)
+44 (0)20 7882 5511 (from overseas)
You can find more information such as opening times and what you need to hand when you call here: http://www.qmul.ac.uk/clearing/
For anything else, don't hesitate to ask!
...or just paranoid?