Twitter texts :(

[amy_95]

I signed up to get people I'm following when they tweet, it sends to my phone, and I can tweet by text aswell. I'm on O2's online plan, unlimited texts blah blah blah but just today, i was trying to delete the last text I got which was a tweet from fearne cotton. It won't delete and I can't receive texts "/
much help needed
thankyouuu :) xoxo