Unable to dispute unauthorized charge on Cox billing statement.

On 03/12/2024 I reviewed my Cox billing statement for March 2024 and discovered an unauthorized charge on my Cox monthly billing statement. There is a monthly $10 charge for Premium Support Cox Complete Care. I did not agree to this service when I arranged for Cox Internet Service. I was never notified about this charge. This charge is unexpected and I have paid the charge for 4 months. I am requesting a refund for $40 for 4 months of payment. At the bottom of the billing statement it states that for billing dispute and resolution to contact a number listed on the top of that statement page. The number listed above is 623-594-1000. I called and spoke with a customer service agent and she was able to remove this service account the same day. When I inquired about a refund- specifically asked who do I contact about a billing inquiry or dispute, and can I speak to your manager? The customer service representative informed me that Cox does not do refunds. No further information was provided. I am in the process of obtaining legal consult for my request for a refund. It appears as though this forum is one of the only methods available to request refund and submit a dispute.