I'm sorry to hear you're having issues with calls on T-Mobile network. I've personally never had a issue with T-Mobile service in Honolulu, Los Angeles, or NYC and would like to help.
I am concerned that you are not having adequate coverage at your residence, so I'm going to link you to a article I wrote about signal boosters that should help. If that does not help, there is a deeper issue regarding your device, or with overall coverage. Please contact T-Mobile reps at 611 on your T-Mobile phone, use their social media accounts, or log onto myT-Mobile to initiate a chat.
Let me know if you need more help.