Shocked to know that
Brother what does your Passbook or Online Transaction statement shows? Where did the money go? Who took it? I am unable to figure how anybody could withdraw funds without your authorization. Did any of your NEFT/IMPS/RTGS failed and the amount got blocked?
In money is kept in digitalised format, so, it cannot evaporate into the thin air without leaving a trace. The bank got to explain the "Transaction" and I guess you have already lodged a complaint to the Bank's grievance ombudsman. If you are not happy with the settlement offered by the ombudsman, you can file an appeal before the appellate authority within 30 days. The appellate authority in this case is the Deputy Governor of the RBI. Alternatively, you can also approach consumer redressal forums, which take up bank-related complaints, or even the courts.
You are a hardcore trader who do not want to get emotionally swayed which is a great thing, but, you need to find out what happened at all-cost. After all its your money which got lost to the faulty system.
BTW you're sure its not a mischief from any friend or relative, right?