I don't know about the services yet but I have bought two sim online.
First I have fill the necessary information to buy a sim for me and paid by credit card. Then after I have fill up to buy second sim for my friend, obviously I enter all information about him. But I used my credit card and account to buy both sim and now finally I found that the both sim card is on my friend's name not on my name....(even the first one)
At last when the sim is on hand not working "sim registration failed" called to call center, visited twice thrice to the store one is been sorted out after couple of days by being changed the sim and one is yet not working....called many time...visited twice...sometime says this sometime says that...seems I bought the sim to hang on the wall for show...so annoyed hmmmm!