I presume you are trying to migrate away from 3 to another network and want a pac code.
"Text to Switch is simple. All you need to do is text PAC to 65075 and you’ll get your code straight away, you don’t even have to make a phone call." I believe the text is free so it should work even if you have no credit.
Make sure you have signal to receive a text as you pac code should come back almost right away. pass on the pac code to the network you are migrating to.
