All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
It is permissible for you to get rid of the interest amounts by giving them to the people who were affected by the floods.
You have to close the savings account in the Riba-based bank and keep your money in a permissible trade and the like.
If you are forced to deal with a Riba-based bank, then you must deposit your money in a current account and not in a savings account.
For more benefit, please refer to Fatwa 265492.
Allah knows best.