Hi. I took Airtel call one card. But when ever I try to make a call using the local access numbers they provided, I simply get message saying that "all lines to this number are busy. Please try later". I almost tried all the numbers provided by them for all the US states but of no use. I tried calling the customer service and u just get the message -- all our executives are busy. Please hold the line". this will continue for 10 minutes or so. This card sucks...please dont buy this card...there are many other good calling... read full review »