It is undoubtedly illegal to deduct the PF amount without authorization by the department, and verbal authorization is not valid. The company needs a PF number through which it can deposit the amount of PF deductions from the salary of its employees. However, you should also keep in mind that you cannot afford to destabilize your relations with your company over small matters. You alone should not contest it. You should discuss this matter with your colleagues and then represent it to the company on a collective basis so that you may get the desired results. The amount of PF is not significant enough for you to risk fighting with your company all alone.
Moreover, if the number of employees in the company is 20 or more, the company is statutorily required to obtain a PF number, deduct PF, and deposit it regularly. If the number of employees is less than 20, then it is a total fraud, and you should address the matter immediately. The company is not applying for a PF number and is misusing or rather cheating with the PF fund.
Regards,
Mahavir Mittal