I’m being stolen from by xfinity , 4 months stress on phone promised refund no response of truth telling how do I get a US supervisor

Watch “ FREE Smart watch give away” not free being charged without permission, lied to over and over that situation resolved all this after I purchased new iPhone 17 in a store. I feel very abused mentally and financially and taken advantage of as a senior citizen, and in general as a customer. Hours on phone with outsourced agents trained to lie and coming from scripted response's. I was told free watches up to 5 I didn’t want one “ oh take them they are free” I came in for a phone! I was pushed hard so I said ok I’ll take 2 ….i was told all you have to do is add a line. “ if you want to” I waited until December but then find out charged on day I purchased the phone. In December I called to add line. But then my daughter said it was an older I watch …she didn’t want it. I can’t see the face of it nor use due to arthritic fingers and glaucoma. Called to cancel told I could in January…agreed to agreement that I couldn’t reinstate the lines to use watch. Agreed to this. I have been charged ever since and told 2 year agreement !!!! Never disclosed no where on receipt. Not to mention I was sold all wrong and duplicate additional apparatus of which I returned one, went to use the other and now those are not specific to my phone. It’s been just horrible upsetting frustrating expensive. I feel lied to and hoodwinked. I have called 4 plus more hours additional reps telling me it will be taken care of it is NOT. What is going on with this bullying of customers and shady behavior by agents and no access to a United States supervisor. ? You were already disciplined and fined for doing this to customers in 2018. 
This is no longer tolerable. I have been a loyal customer for years and you are roadblocking me and preventing me being heard with my complaint and you are charging me for services you have NO BUSINESS charging for. It’s atrocious and vile. 
I want someone with appropriate behavior and knowledge to help me resolve this debacle.