Yes, I currently use www.nobelcom.com also make sure to get a card with ‘1second’ call time rounding (it costs more, but it is saving you time and money really) otherwise your losing call time for unused minutes if you dont calculate your exact call time ‘on air’. Also if the person has a landline it is cheaper and you get alot more mintues.
Yes, you can. Just read the instructions on the back of the card, and/or call the customer service number to find out the exact steps. It’s pretty easy.