I took matrix prepaid sim for USA trip, from one of the Vfs Branch executive his no.9739970761. he gave good service, he helped me to chose the plan. transparency was there in his explanation, he explained all tax charges properly.over all good service.
I already tried stay connect for my last trip, matrix is far better than stay-connect. at least they response call.
I always recommend to buy prepaid for any country travel.
it was worth-able!