DirectTV Billing Dispute Inquiry

I signed up for DirectTV Streaming's no contract agreement back in October 2021 whereby I received a plethora of misinformation as well as a lack thereof from the customer sales rep I had initially spoken to over the phone pertaining to DirectTV's Streaming no-contract agreement regarding early cancelation/termination fees, hidden fees, etc. Unfortunately, the DirectTV service installation turned into a real debacle given it literally took three different appointments to complete not to mention several broken and unkept promises in addition to time wasted on the phone and my staying home to complete the DirectTV service to be provided. Two months later, I decided to cancel my DirectTV service in which event I was soon informed via email that I owed a remaining balance of $110 for DirectTV's streaming device that I never required. Moreover, it was never explained to me upfront by the DirectTV sales rep I had spoken to as to why the streaming device was included under an installment plan later provided in PDF format. I was also never apprised of the 14-day time restriction to cancel or be held responsible for the remaining balance on the installment agreement to purchase a DirectTV streaming device I didn't require that the DirectTV customer service rep who had completed my initial order request for DirectTV conveniently failed to inform me over the phone. Needless to say, if I had known beforehand that the Amazon Firestick and Roku streaming devices I owned were sufficient to access DirectTV, I would have instructed the customer sales rep to exclude the DirectTV streaming device. Unfortunately, I was not made aware of this matter until I canceled DirectTV in which event I contacted yet another customer service rep that apprised me of this information. I should also add that the DirectTV customer service rep I had spoken to about canceling DirectTV informed me that I would be receiving both packaging and return postage to return the DirectTV streaming equipment initially provided. In reality, I never received anything in the mail to date in which event another DirectTV customer service rep told me to keep the DirectTV streaming device, apologized for their company policy over which he had no control, and stated that I owed a remaining balance on the installment agreement in the amount of $110 or $120 minus two previous payments of $5 each. All considered it clearly appears that I am left to be penalized and owe $110 to DirectTV for equipment I didn't need. To make matters worse, I have nothing in writing (other than an unsigned installment agreement I had presumably verbally agreed to over the phone. An agreement I received after the fact. How convenient!) to hold any DirectTV customer service rep accountable for misinformation or the lack thereof provided over the phone. Last but not least, DirectTV makes it difficult if not virtually impossible to contact anyone in their legal or billing department who can help resolve this matter as they fail to provide a contact phone number or an email address whereby the customer is left to resort to a customer service number that employs AI along with clueless customer service reps that are of no help whatsoever and unable to resolve issues such as that described herein.