Or alternatively:
Set up a premium rate phone-line, then go into town with a smart phone (installed with the software needed to connect to other peoples bluetooth) and find out how to actually ring people off of their phones to that premium rate phone number via. your phone...
(i saw that on hustle
)
Or you could get a premium rate phone line and then go into random peoples houses and phone up the number and leave it off the hook for a good few minutes at a rate of like £1.50 a minute or something