COX Communications COX Cable Predatory price gouging Arizona

My mother passed away. We disconnected her COX service without problems. On returning a cable box, we were informed that three boxes were still missing. The total charges for these three boxes was 757 dollars. I know two of these boxes were returned by us a few years ago. Who knew we would need to keep the receipts forever. The charge if almost 300 dollars a box is over the top. No where are their prices to purchase unreturned equipment posted. One of the boxes was over 5 years old. The fine print of the contract states the customer is required to pay the retail price if unreturned equipment, but the price is not defined and it does not state the retail price on rental or account close out. Nice new cable modems run from 50 dollars to 150 dollars. There is no incentive for COX to correctly track returned equipment with these outrageous charges. Cuz us relying on their power to ruin credit scores and the garrasenentbif collections to engage in unethical business practices.