Internet still winking out nearly daily, customer service no help

We keep losing internet.  It usually comes back but this is still frustrating.  SInce I refuse to talk to India, I communicated with CHAT.  Today I got a guy named "Joe" who seemed intelligent and helpful and knowledgeable.  I explained my situation and he responded intelligently and ended up telling me he had experience with many problems similar to mine, so I was confident there'd be no more outages.  Well for twenty minutes the service was great.  Then OUT again.   So I went to my public library and used their computer and logged into my acct again for another CHAT with "Parker."   I had just told this doofus that I was posting from my local public library, but two comments later he started the usual "troubleshooting" routine and asked me to update him on which lights were on with my router!!  Speechless, I reminded him that I WAS NOT HOME because the internet was out which was the REASON I was conversing with him.  Then I told him he might want to forward my chat conversation with him and Joe to a supervisor because I was DONE with this ridiculousness, and was thinking of closing my acct with ATT once and for all, after decades.  After coming home, things have been better but still  having brief outages.  I truly believe ATT needs to send someone out to my condo property in person to find the problem.  Poor customer service.  These people are nearly useless unless  you have some real stickler of a problem, like forgetting to plug in your router or something.