Southern Railway — cheating activity by kiosk staff on chennai central station premises.

Address:

Chennai, Tamil Nadu

Today i reached chennai central station on train no 12696 trivandrum chennai superfast. I had 2nos. Vada at the kiosk near the gates, where the amount displayed was rs. 17.00 for the 2 pieces. The vendor gave it on a flimsy tiny paper place with just a spoonful of sambar on it. I paid him ₹20.00 but the vendor is now reluctant to give the balance change. When asked he replied the additional amount was for how he served otherwise the 2 vada would be given in the customers hand., mockingly.
Are these people under the control of southern railway? Is southern railways officials empowered to control these cheats. Hope indias pride will not be put to toss and shame by these haphazards. Really annoying to notify you about happenings under your nose.