We were fortunate I guess. Our main plumber came every time we needed him. And now that we have water from the city and not from the well hopefully we no longer will need his service again.
The man who did renovation on our house also did a good job. It has been probably like 10+ years but the house still looks good.

But my mother's friend was not so lucky. She needed tiles changed in her bath. I think she also had some issues with a wash machine...Anyway she called one plumber. he did not know how to do his job. The other asked too much money...The third showed up up drunk and late(?). In the end she took of the tiles herself and told most of those plumbers to get lost. We recommend her our plumber but he was working in another city at that time.