Dear brother, every action has an equal and opposite reaction. If the bank isn't paying any heed to solve your problem, rather deducting tax illegally, you have all rights to teach them a good lesson by stopping to bank with them for some time, and take out all cash from your account. You have to fight for your rights rather than settling for some thing less (viz. making less than 50,000 rupees transfer to avoid deducting tax, which shouldn't be deducted otherwise). Regards.