I bought a sim card from Clay while i was travelling to US and convenience turned into a inconvenience right after i signed the agreement sheet. First they blocked 10k on my card. When i questioned, they said its US so thats the norm for US. And then while i was in US not even 6 days into the trip, they barred all my calls – outgoings or incomings! I was left with a mobile phone which was rendered useless!! Calling their customer care, i get to know that i have crossed my limit of credit and until someone pays the bill, they wont start my services. !! I had to email them to disconnect my connection while i was US and cleared the bill worth 4000 ( which was my credit limit i guess) right there. So if you want to go through this process, please go ahead and get urself a clay sim card!!