DW got caught up in a similar scam, but "involved" the US Marshals office and that she didn't show up for Grand Jury duty. They were
very good and had her scared sh**less. After getting $1000 in gift cards I convinced her to call the Marshals office and not give the scammers the numbers off the back of the cards.
Don't underestimate how good these scammers are.
Depending on who you travel with dictates your options, which are in my preferred order are HAM, CB, FRS/GMRS, and cell phone.
Our Jeep club uses both HAM and CB, with HAM working the best. Since not all members have their HAM license primary communications are via the CB. It does get confusing when people are talking on both.
I have both a 2M/440 and a CB in my MH, but rarely use the CB.