Kohls They changed the cost of a product after it was purchased, never sent a bill showing the cost and I paid the cost first listed. Then they said my account as overdue Menomonee Falls Wisconsin

I made an online purchase of a lawn chair from Kohls.  It was advertised by Kohls and I paid the advertised cost on my Kohls account.

They changed the cost of the chair, changed my account to online billing only without telling me.. I never authorized online billing only.  They never sent me a bill, neither online nor paper.

Months later I got a phone call that my bill was overdue.  When I questionned why I was never sent a bill their written excuse was "frontline associates do not have access to customers accounts." Then why are they calling about an overdue bill?

I want an explanation as to why no bill was ever sent, my records corrected, a written apology, written confirmation that my account has been closed and reimbursement for the money I paid because of their error in not sending a bill.  This was their mistake and they need to correct it.