The Combox basic is a free service included in all post and prepaid offers. The Combox pro option, CHF 5.- per month, is only available for mobile subscriptions.
You can find NATEL® easy smart tariffs for calls/SMS/Data in Switzerland and abroad here http://bit.ly/1IUG49W and here http://bit.ly/2dv0uft
If you lost your PIN, text "Combox" to 444.
It is possible to forward the incoming calls on an international number, but I would definitely not recommend it due to roaming fees.
Please find more information about the Combox on our website and on the Combox manual.
Hope it helps!