How to activate my phone without sending an sms

I have a corporate blackberry that has SMS sending disabled - I can received SMS but not send. I want to set up Twitter so I receive SMS updates, but the setup asks me to send a code to 40404 - but I can't send SMS. Is there a way to activate my phone by receiving a code and typing it into my twitter account (or something like that)?
 
sad I’m frustrated
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