Ditto. I went to a hipster type cafe that was fairly new in the little town local to me, run by 2 cousins in their 30s, and a friend of theirs. They did ice creams, and sundaes, and knickerbocker glories, and fancy tarts and cream cakes - and also various pastries, and sandwiches and rolls etc... some vegan, some not.
I went in one time, (around June this year,) and a woman behind the counter said 'hello, there's a small table for you there, we'll be with you soon.' I looked through the menu and thought 'I really fancy a knickerbocker glory and a latte!'
5 minutes went by, 6 minutes 7 minutes... No-one came, no-was at the counter, I couldn't see any member of staff anywhere... I popped to the counter and waved a bit at a woman in the kitchen. She waved back and nodded (to acknowledge I was still waiting...) 3 minutes later - nothing, 5 minutes later, nothing, 7 minutes, 8 minutes.... I was like 🙄 It had been about 17/18 minutes by now! No-one else had come in, and only 5 or 6 couples were there, and 3 lone people like me. (a few of them were waiting to be seen/served too!)
I just walked out and went to Morrisons Cafe, (Morrisons was 10 minutes walk away,) and I had a slice of egg custard and a latte for about £4.50 in total. Would have cost me about £11.50 for the knickerbocker glory and a latte in the 'hipster' cafe.
I gave them another chance. I went about a month later, and walked in. (It was midday.) As soon as I set foot in the place, a woman called over 'we're closed to the public at the moment, there's a party due to start in half an hour. ... can you come back at 2.30pm?' Errrr, OK then - I will just hang around like a fart in a lift for TWO and a HALF hours, until you're ready to let me in... 
Haven't been back since. I just go to Morrisons Cafe now, or McDonalds, or Costa. The place in question has been open since March 2025, (9 months so far.) I doubt if they will last long....
As has been said, you can't just support these 'independent' places purely because they're independent/family run... Not if the service is shit, and they cost twice as much (or more!) as the big conglomerates! They are far much likely to get shirty and arsey if you complain too! (And not give a refund, or vouchers.) As someone said, they will often try to make any 'complaint' your fault.
Disclaimer, not ALL small, independent businesses are like this of course, but more than enough are!
!