Horrible chat , call center and in store service

I was offered a promo of 1 year free mobile as a new xfinity  home internet subscriber . I brought my own device  and they checked it for compatibile  , afterwards I ported over my number from T- Mibile. I went home and discovered no connectivity - zero bars . 8 was told to return to the store  , an agent did something with the phone and it made 1 call  moments later it shower no connection emergency calls only . I spent 5 hours 8n store with onl8ne s7opo45 8n Egyp5 and occasional help from 2 salepeople. They were unable to establish any vars and they tild me to go back to T- Mobile  . I was left with no service for 24 hours and had to pa6 a reinstatement fee to return to T Mobile . I went back to the store and asked how long I had to bring another device to get my free year - 8 was rudely 5old that I was out of luck  since 8 left xfinity  which NEVER  worked on my device- plus on advice of your own teammembers . They never told me I couldn't  get my free year after that . I then talked to the manager who gave me a corporate number , I reached out and they apologized for the horrible experience and unblocked my p4omo. I bought another device , also compatibile  and we tried to install a new xfinity  number to test it before porting over my T mobile number . This was my free year . After testing for 2 days , I returned to Port over my T-,Mobile number  . In store I was 5old that my free service was activated fo4 a year . I then saw that I was in fact charged . I spent hours with call center which remived the charges and said that they resolved the problem. Then I left the country and started using the chat because I see that my current billing cycle is for 40 dollars and I also owe 4.46 for July.  This is CRAZY ! AFTER DAYS AND HOURS  on the chat - I was first told that 2 actions wee accidently activated , then yhe chat agent just disappeared . I wrote back 3 -  5imes repeated the whole story and ended up talking to a supervisor who told me that the charges were legit - why then did the call center refund my payments? Why did the store workers tell me this was my free year which was unblocked by corporate ? I gave been through hell and spent several hours over several days talking to people who contradict themselves ! Horr8ble device.  Please resolve my issue - 8 am traveling and canno5 call so as not to incur roaming or long distance fees . Please help !!!