Idea Cellular — activation of service without user request

Address:

Coimbatore, Tamil Nadu

my idea mobile nos are [protected] and [protected]. i use separate phones for the two sims and Rs.3/- is being deducted in regular intervals at the same time. i enquired about this in customer care, they replied that i had used idea power by dialling some ussd code. the deductions had taken place more than five times for both the sims at the same point of time. if suppose as per the statement of customer care, is it practically possible for the user to use or dial the ussd code at the same time for the sims in same mobile or a different mobile, and that too for more than five times?