The bank withheld my old-age insurance in 500 yuan without my knowledge. What should I do?

If it's normal social security deduction, don't worry.

According to reason, the social security card will not be automatically renewed, so you need to call the company. Or the institution where you pay social security. If you are sure it is medical insurance, it may also be the automatic renewal function of a commercial medical insurance. The premise is to find out the category of deduction, whether it is social security or commercial insurance. You can check with the Social Security Bureau. In principle, social security will not deduct more fees; Determine the source of deduction, and then decide whether to turn off automatic renewal.