On Line Banking - adding a bank-approved beneficiary.

I wanted to add a bank-approved beneficiary - I selected Ekurhuleni and I get several options. I called the call centre (03-03-2022 @ 9 :15am) They told me I need to ask Ekurhuleni which beneficiary to select. This I find frustrating as the account number of the beneficiary is blocked out. I know the account number that I need to pay - so why have a bank-approved beneficiary that you can't see if you are paying the correct account?