In my defense there were many cordial conversations via texted before things got ugly and I warned him.

Unfortunately, you are right . Customer service these days , and qualified people for the job is very disappointing . There is no pride in workmanship anymore either.  Or should I say a rarity…….   Although There are a few gems in the mix.   Just had the same rotten service at a local hardware.  I waited respectfully a few feet back while 2 men were behind the counter . 1 taking a  exceptionally  long personal phone call. The other ease dropping on the others conversation.  And not even a glance in my direction.     Mind you, it HAD TO take some effort to ignore me for a good 8-11 minutes….and I was at that point …   not able to hold back.  When the 1st one was STILL on the phone and the 2nd one, decided to walk away from behind the desk in the opposite direction.   I was on his ass quick. Basically, called him out…….     Long story short, he was more than happy to help me out…….  Lol.  I just don’t feel that a customers needs to be treated poorly.  If that’s your “way of operating “ then your in the wrong business buddy and get the F out.   
WAIT  on your customer, say THANK YOU!!! Solve the problem quickly and effectively. If you can not. Get someone who can.  Don’t draw it out for days or weeks.   Should of been fixed promptly the 1st time.  Those kinds of honest , hardworking ,  customer service reps/owners will always bring repeat business.   Those who don’t……..   in my neck of the woods …… word travels fast……..   person I told, knows the owner. Kid got reprimanded.     🤔 gotta love a little karma……….