HI,
If your "other account" (the one you have your benefits paid into) is with A&L, they may just "offset" the
overdraft
from your other account leaving you with nothing. Offsetting means taking money from one account to clear a debt in another.
While the empty account is open and you don't pay into it, they are going to charge you the monthly fee and if it's still in overdraft then the charges are going to mount.
My immediate thought is for you to open another account with a bank that's not any part of the Santander group so that your money (what pittance it is) is safe from the greedy bankers.
fox