It is so sad to hear that you cannot take advantage of T-Mobile's very impressive 4G LTE speeds at your residence area!
At this moment, I am most concerned that you aren't able to use your devices at home, so I'll link you to a T-Mobile support article about ordering a Personal CellSpot, which acts like a small cell tower, allowing extended range of the T-Mobile 4G LTE network at your residence.
There are different CellSpot models that are available, so let me clarify:
T-Mobile offers two different CellSpot devices.
- 4G LTE Signal Booster
- 4G LTE CellSpot Mini Tower
The main difference between the two devices is that
- The Signal Booster requires that your place of residence has at least minimum one bar of 3G, 4G HSPA+, or 4G LTE indoor signal and a 3G, 4G HSPA+, or 4G LTE device (T-Mobile or BYOD). This basically means that your home needs to have some T-Mobile service available there in order for this device to work properly. If you don't get ANY T-Mobile service, whether cellular or data service, this device will NOT work.
- The CellSpot Mini Tower requires that you have high-speed Internet at your residence. It will connect to your modem, and take some of your home internet's bandwidth. To clarify: you need broadband internet service at home (If you have WI-FI at home from Comcast, U-Verse, or etc., this is the device you should look for.) This device does not require the signal that is needed for the Signal Booster device.
As for requesting T-Mobile to investigate their cellular coverage at a specific area, I recommend that you call T-Mobile (611 on your phone), message T-Mobile reps on myT-Mobile, email them, or use their several social media accounts to talk to a rep about it. This is a support forum, therefore the urgency of support will vary. Keep in mind, I'm not a T-Mobile representative.
I hope your problems are solved. Please let me know on what I can help.