Help - Is this a problem in HDFC trading system or am I doing something wrong?

#1
I have just noticed a critical bug with HDFC trading system. (I Think)

Today in the morning, I bought 18 Educomp at 4135 and then sold later at 4244..

Later in the day, I short sell 18 Educomp with SL trigger at 4295.

I later checked in my Margin book, which said

Average Trade Price - 4402, Current Market Price - 4302, Profit/Loss - 1800

I squared off this trade immidiately and thought I have made a profit of 1800 but just now I checked the cash settled values, biil summary says I short sell the scrips at 4293 instead of 4402 (which is strange as the margin book always said trade price was 4402 and profit is 1800 and it was displayed on my screen for at least 2 hours), squared off at 4304 and hence made a loss.

I can not understand this thing, how can their margin book does not match with trade book?

Has anyone else seen this problem before? or may be I am wrong somewhere?

This is a very serious issue for anyone using HDFC for day trading..

Sharmaji