Q 2: Is it permissible
to deposit money in usurious banks for safekeeping against theft,
then, take it when needed without interest and without paying fees for the depositing process?
It is not permissible to deposit money and the like in usurious banks and institutions, whether bearing interest or not, as it is a kind of supporting wrong and transgression. Allah (Part No. 13; Page No. 347) (Exalted be He) stated:
...but do not help one another in sin and transgression.
Unless a person fears the money would be lost, seized, or stolen, and there is no way to protect it other than putting it in a usurious bank, then, only in such a case, is one allowed to engage in the lesser of the two evils.
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.