Joint home loan account cannot be added on Internet banking

So I tried to add me and my husband's joint Home Loan account to my internet banking, it wasn't allowing me. I emailed the home loan division whom told me to go to a branch to have it added.. and i got told at the branch that the system do not allow joint accounts to be added to their internet banking. I find this highly unacceptable as we want to transfer money to and from our home loan account which is now not possible! Will you please then provide me with an alternative option of how we can use the FLEXI RESERVE option on our home loan account.