Cleartrip — Tkt fraud

I hv booked the tkt wd cleartrip in flexi fare and changed the dates bcz I couldn't travel on the date and paid fare difference .and while changing I hv asked customer care agent if I change next time do I hv to pay for Changing fee which was informed I can change any no of time in a year without paying any changing fee .now when I am again Changing it cleartrip is asking me to pay for changing fee apart from fare difference. Pls advise what to do in this case