I was traveling to Singapore for some work and bought a clay post paid sim card to use while I was going to be there for about a week. The entire process right from getting the sim and getting to know what plan I should take was a tedious job. I got the sim 1 day before I flew with no proper user instructions. I was told that Raj would email the details. An email that never came. Nevertheless it was just a sim card no rocket science, so I inserted it like our usual Vodafone sims once I landed in Singapore. That number barely worked for 6 hours after which it just didn’t work at all. No matter what I tried, it just didn’t work. Finally when I could do no I called up Raj ( the sales guy) and asked him to sort this issue. He said that someone would call me and these guys will try to get a sim delivered to me locally. I kept waiting for 2 days for that call but nothing. There was no response and infcat the sales guy also stopped taking my calls. This is what I experienced with ClaY International sim cards and I think after this kind of a treatment, I would never ever use their services even for free.