HTC Explorer — no headset with the handset

Address:

Mumbai City, Maharashtra

I bought HTC explorer handset. it was written on plastic cover of handset "ask for htc branded headset" but when I asked for the same,shopkeeper told that it will cost rs.300 extra for headset. my friend brought the same handset from other shop and he got headset with it free.so please kindly let me know how to get that headset.