I have had a really bad experience with clay SIM card. I have been trying to get out of this contract with them for a student plan that I got for my daughter for UK. It's been more than a month of clearing all documents and bills which were never less than 20k everytime until we realised that the bills were being tampered with to make money and still they haven't disconnected the services and continue to send us bills. It's the worse that I had to deal with and it's just sucking my blood. Never going to recommend it to anyone.