Optimum review: Cancelation of my internet service not completed when I requested it and now I have to pay for a service I did not even use or have

I called in September 12, 2023 to request cancellation of my service and gather information as to where I needed to return the equipment we had. The agent I spoke to was very disrepectful and insisting that I provide information regarding the plan my new provided was offering and the cost of my new service. I repeatedly stated that was not his concern or business and was consistently disputed with staying with your service. After some time it reached a point where I stated again (after several times already) that I just needed to notify your company that I needed my service discontinued and I would be returning the equipment. I also told the agent that I was not going to continue discussing the matter and the result was that I hung up on the agent due to the agent continuing to dispute the matter. I returned the equipment to the nearest iptimum store on Sept. 15th. I am now receiving a bill for 10/15-11/15. When I called today it appears my request was never processed and I am being told the effective date is now 10/20 and I will have to pay the partial bill for a service that was already suppose to be cancelled and I am being penalized due to an agent not doing there job. Furthermore, the agent who helped me today was very helpful and by no fault of her own was required to ask some of the same questions regarding my new service in order to be able to process my cancellation request. I feel this is completely unprofessional to ask information that is not the business of your company as to who I choose to have service with and how much I pay. If I choose to take my business elsewhere I should not be questioned as to the details of my decision unless I freely provide this information.