Hi guys,
Nothing about manipulation here but just how things work, it can be really frustrating to see your portfolio getting steadfastly depleted every passing day and on top of it not being able to do anything about it. What skulk has written is true, if you are trying to get in/out of a scrip that continously hits circuit then you can ask your broker to put your buy/sell order exactly at 9.55 am in the batch files.
I dont know about other trading portals but reliance money does not allow you to place pre market orders, getting rid of shares through such online terminals is next to impossible. In such a case you can give offline transfer of your shares to your broker and try the batch files route. Good luck.