UPS classification code seems not to be working for "ra

We have the classification code set to "00" per the instructions in the documentation.  This should display our discounted rates however it does not.   We have reconfirmed the classification is correct and that the account number is correct.  We tried daily rates, retail rates as well. Those all show the same results as our "rates associated with account" which are incorrect for our account.   Is there a way we can troubleshoot this.  Our rates show very high which of course discourages many sales.

In ClassificationCode, enter one of the following:
01 – Daily rates
04 – Retail rates
53 – Standard list rate
00 – Rate associated with account number.

Thanks/Barb