This evening, I made some phone calls to ShangHai, encountered same problem as you met. The connect was interrupt after 10 seconds and I was charged for 1 minute. But I made other phone calls to BJ successfully.
Perhaps it's something wrong with the lines to SH only. FeiFei, I have some questions to ask you, would you please send me your phone number so that I can call you?
Never use cici tele card!