SIM Problem

I appleid for international roaming and was helped swiftly and received an email to confirm that my application was successful and with instructions how to activate on my iPhone when in the USA. I opened my settings, went to “mobile services” and find that there is no “sim applications” on the menu. I called the telkom help line and they could not help me. I went to the telkom store in Bay West mall in Gqeberha twice and could not be helped. The second time the guy was more interested in his own phone chatting than listening to me. I founded that if I use my wife's telkom sim in my phone the “sim applications” menu appears and just to make sure I also tried my daughters telkom sim and the “sim applications” appeared. I mention it to the people at the telkom store. My sim card was changed in the beginning of the year. My finding is that the new sim card is not programmed with the “sim application” function. I also sent an email to the roaming department asking for help but find no reply. I asked that if it possible for telkom to remotely program my sim to work. I need this fixed before 15 Oct when I leave for the USA. Is it possible for someone with high knowledge of sim cards to help me.