Sears Mastercard outlandish ripoff late fees Nationwide

I paid monthly, for SEARS LIFE accident policy, at $9.80
My balance due on the account was, total, $9.80

This was the first late payment on this account, due to the statement being lost in the house.

Even so, Sears Mastercard deposited my check ($9.80) only
11 days after the due date, for which I was accessed
a $29 late fee.

This works out to be approximately 296% interest for 11 days,
or an APR of 9821.8% Could this meet the test for USURY?

My appeal for an adjustment was flat turned down.

The only counter action I found available to me was to cancel
the Sears Mastercard, as well as the insurance policy, and
determine never to enter another Sears store.

I wonder if Sears management knows stuff like this goes on?

John
Los Angeles, California
U.S.A.