How to launch a complaint about xfinity mobile

I left T-mobile after 22 years of pretty reliable service to try to scale back my bills and only have one provider for phone and internet.  
To try to make this as brief as possible, it took 7 hours to accomplish something I was assured could be done during my breakfast before I had to leave for work.   
Needless to say after numerous FAILED chats with your wretched chat bot that seemed to lose connection any time I requested a live agent.  I finally gave in and sat on hold for a human.  I couldn’t even request a call back as I was too scared to hang up.  
Now mind you, every person I encountered tried their best to help me to their capabilities but the last gentleman, I can’t believe I fell for.  
In order to get my transferred number sorted out they had to cancel my old number.  Which was attached to the phone I was using.   So when I asked if canceling that number would then kill the phone I was using, his response was do you have another phone you can use.   No, because once my old desired number was transferred over to some mysterious third phone I never ordered but was showing up on my profile.  I lost the service of the T-Mobile phone.   So he explained how to find and install my eSIM and promised to check in with me in 30 minutes.   Now if I couldn’t get the eSIM to work, which if I couldn’t, how was he planning to contact me.  
 Very smooth way to get a difficult customer situation off the line and off your hands.  
After sobbing for hours,realizing I had wasted a whole work day, missed meetings, appointments and calls dealing with this situation, I loaded up the phone and headed to the xfinity store which everyone said was not necessary as the process is so simple using the app.   
I was ready to chuck the whole thing and go back to T-Mobile and beg for forgiveness for forsaking our 22 year relationship for a less expensive plan.  
Once at the store I saw a sea of waiting customers.   Again, with the tears.   A young man named Kayden walked up to me asking if I was ok.   Through makeup stained tears I explained the nightmare I was living with this phone.   I’m sure he had other people waiting to assisted but he took pity on me and 20 minutes later, I had a functioning phone.   
That young man saved you a customer yesterday.   He truly deserves some sort of positive recognition for that selfless act of kindness and superior customer service recovery.  
   See, I am a 33 year flight attendant.   Since beginning at Northwest and now delta, customer service has been the backbone of my existence.  So I know when I am being read the script and passed along and when someone actually steps out of the box and honestly offers true customer service.   
That is what happened with Kayden.   
Now also working at a not for profit organization part time, I use my customer service skills and service failure recovery skills on an hourly basis.   Except yesterday when I missed 7 hours of that work.
Now I am waiting to see what Xfinity will do to compensate me for all of my time invested in the debacle, not to mention the emotional pain and anxiety I experienced during the whole experience.   Setting up new service with your company should not have given me a breakdown,  have caused me to lose a day of pay, and have to (use my neighbors phone) to get off the trip I had that night because I didn’t know if I would have a functioning phone for work.

In Service recovery classes, we were taught to ask the customer what they would consider fair compensation for their inconvenience.

What I would consider fair compensation is to be completely credited for the phone as well as credited for the phone I am returning as a trade in.  That in turn would cover the charge for the smart watch that is coming to me as well as give me enough credit for a billing cycle or two.  Considering how long I have been a comcast/xfinity customer for my cable, internet and now mobile, I see this as more than fair.  It would be a remarkable example of the customer service you proudly advertise  as well as service recovery for when that service fails.