No trades like options/futures on the same underlying security. I see several like this in my statement. I talked to the customer care, they say that this is legitimate wash sale & disallowed loss. The way they put it "Since I bought in two/more lots with in 30 days & sold most of them within 30 days makes this a wash sale". I don't agree with that either. Thanks for your comments!
given2invest , Yes, I own another chunk(1000) which I bought them in 2009 for much lower price. So, I own 1200 now. As you can see this is not an exact replacement at all.