I haven't heard anything like this,why they will scam for only .25 btc.it must be that the user would be demanding bch as fork happen or there may be technical issue.
Please read the news Unocoin not scammed and its already mentioned that Unocoin taken necessary steps regarding that incident .
The sad thing is that Indian exchanges are not as serious as international exchanges. You can see, coinsecure's website is down because of the increased traffic and unocoin's theft showing that their system also has flaws.
Well Coinsecure and benson's dedication toward bitcoin in India pretty serious so far , CS upgraded their situation now and always amazing support from Benson which made me feel safe and secure with CS . CS gets sometime high load and need some improvement of their servers but they always try best to get solved asap .
