Using the prepaid or pay as you go cell phones to call the free 0800 numbers in Switzerland is not free as many providers claim. Prices differ from provider to provider... be on the watch
it is indeed free to call a 0800 number. when you use a cellphone to call such number, you are paying for the airtime... those are two different things
If you're that worried about price, why don't you find a payphone and dial for free?
Use your pay as you go cell phone to call any 0800 number and not the 0800 of your provider. Don't forget to check your credit before calling. Good Luck!