phone won't ring calls go straight to voice mail

Can you recommend another cell provider who can figure out this problem?  Wife and I both have it.  And it is random.  So rebooting isn't an option.  How would you know when to reboot?  Apparently got good signal strength.  Look at the number of complaints.  T-Mobile has a technical issue on their end.  It isn't the user or their devices.  Asking the users to play detective is not good.  We have better things to do.  I pay for a phone service, not a game.