Eeesh, seanskivt, I don't blame you one bit for being frustrated. I took a look at the map, selected your device, and dropped pins in East Lyme and along Rte 11 from Colchester to Salem - it does look like it's stronger in Colchester but as you move down on the map towards Salem and with a pin dropped in East Lyme, if you're zoomed in, the 4G LTE is listed as "Fair Signal". Still I wouldn't expect to have you receive no service at all, especially with that device.
Since the Support Community is a user forum, we don't have the account access needed to file Service Inquiries - but if you've got a moment it would be fantastic if you could reach out to our Tech team over the phone and provide an address on Upper Pattagansett and along Rte 11 where you experienced no service so that we can get something filed. Given that the troubleshooting steps you tried yielded no results, it may be possible that there's an outage in the area impacting our expected coverage there, and that type of ticket will alert engineering to look into the matter.
Thank you for joining T-Mobile and the Support Community and taking the time to let us know about this here! Please let us know if there are any other concerns we can address for you.