Kira called into the show asking advice about how to handle poor customer service from Sprint after having issues with her phone. Leo told her to contact Dan Hesse, Sprint CEO, complaining about the situation and it worked! She contacted them on Monday and they responded already the same week on Friday.
Since Chris has a GSM phone, the easiest thing to do would be getting a temporary SIM card from the AT&T store. The chat room suggests going to Wal-Mart or Best Buy to get a SIM card there, but data is expensive. It may be best to go get a cheap unlimited data phone with a 1 month policy from MetroPCS and then give it over to a friend when Chris goes back home.