I've gone over my texts of 3000 by about 100 so far this month and I have about 10 days left! Although my plan says unlimited texts does the fair usage rule apply? I've tried looking into it but no luck. I emailed, should get an answer today but I need it asap. What happens if the fair usage thing does apply...do i have to pay for each individual text after that or do they allow you to go over but warn you not to do it again or..?

If I have to cope for the next 10days is there anything I can do so i don't have to pay ridiculous amounts for a few hundred more texts?
It says my current plan is:

Price plan
Your Plan comes with 600 minutes + Unlimited Texts with Mobile Internet and Vodafone Passport