[Resolved]  TATA Indicom Cdma Mobile — new sim is not working on old tata indicom cdma mobile

I have purchased new tata indicom sim for rs. 200 with Rs.100 talktime from retailer 2 days back but when i insert my sim on my old cdma mobile (SCH S109) . This is asking for "enter a valid sim" . Immediately i went to tata indicom outlet but to my surprise they told "new sim will not work on old mobile" . In fact, they are not ready to take back my new sim .Now what should i do with my new sim if this is not working on old tata cdma mobile ? . I could have not purchased that sim if they had informed me before . Not understand , What for they are changing the software in the sim ? They may come up after 2 yrs "saying all new sims will not work in old mobiles" Hence we need to throw our old cdma phone and again need to purchase new cdma mobiles after 2 yrs . This is really REDICULOUS!!!! . I belive this is one type of marketing they are doing for selling their mobiles which is VERY BAD!!!!