Customer Support Formal Complaint

Hello,

I have tried several times to get a wifi extender for my house. I have gone to the store twice in Renton, WA and been told that I qualify for the free extenders because I have a dead spot in my living room which is on the opposite side of the house from where my xfinity box is, inside my office, with 3+ walls between. It is still doing this even after upgrading my internet speed. The wifisignal was always dropping out and it was impossible to use our phones while watching tv as T-mobile service is not very good at our location. Having talked to several agents over the past 6 months or more I kept being told that it was on its way, I would need to wait two weeks for testing and then I would know if I qualify,  to talking with a supervisor who had it tested immediately and then called me back an hour later to say I don't qualify because of the test.  Meanwhile I can't use my phone in the tv room or it freezes up when you use the internet.

SO I have spent multiple hours talking to agents, each with a different story and response, made several trips to stores and kept being told that I qualify for free extenders, was told by more than one agent on the phone that they would be in the mail the next day, etc... and nothing.  So your customer service in this matter is abhorrent. I was made to feel like I was making up the whole issue with my lack of wifi connection. I have been with comcast for decades now, have always made my payments and feel like I deserve some kind of help with resolving this. The $50 credit I received is just a spit in the bucket for my time, patience and dignity as a loyal customer. All I need is one xfinity extender to put midway to increase my wifi. I know I have paid for one many times over in profits that xfinity has received from me every month over several decades.

Can someone please respond and rectify this for me, a retired public education teacher and my wife,  a school nurse still employed part-time?

Thank you,

[Edited: "Personal Information"]