I actually laughed at that. Every bank here is the same and we supposedly have some of the safest banks in the world. Im limited to an 8 character password, and the other banks here are little better. New Zealand.
It's safe in NZ because even with access to your internet banking, a thief can only transfer money to another NZ account and they're fairly reliable at verifying the identities of account holders.
Which bank are you with? Having had accounts with 4 major banks here (Kiwibank, ANZ, Westpac, ASB), I can confirm that you are allowed passwords more than 8 characters.
Also, several of them offer a second protection level for logging in.