chat w/customer support for 5 hours in 2 days from Japan- they still can't fix the International service

My plan has "unlimited talk, text, and data in 215+ destinations, plus calls to Canada and Mexico" and that's the only reason I switched to Xfinity. Phone worked ok in East coast, then no service in Japan. 

• iPhone 12
• eSIM
• Xfinity Mobile 70.0
• Carrier Lock: No SIM restrictions
• Worked normally in Massachusetts before departure
• Plan includes international talk/text/data in 215+ destinations
• Data Roaming ON
• Manual selection attempted with NTT Docomo, SoftBank, au, Rakuten
• All result in No Service
• Wi-Fi Calling activation fails with Verizon backend case ID

I've been on chat w Xfinity customer support, at once I was told that they switched to the on-shift supervisor, other time, my case was sent to the expert team who would be sending me an email with solutions (then about 5 min. later, I received an email from Xfinity with the title "information you requested" which included a link to "how to pay your bills". ?? 

I was so disappointed for making the switch to Xfinity as I was happy with our previous carrier- The new plan w Xfinity costed even more, which I happily took due to the international plan.  I needed this Int'l service to receive calls from my doctors in US and authentication texts. Let me know if anyone successfully connected to the local network in none US territories after first encountering some issues.