What do you wish you had known about customer support on day #1?

Hi friends, like the title says...

If you were to go back in time to when you were justing starting your first SaaS business, what would you tell yourself to do/think differently when it comes to customer support?

What are the biggest customer support mistakes you made? And the things you got right?

Can be tooling, mindset, strategy, tactics... whatever comes to mind for you as important.

(background to this: I'm creating a little course/guide for new SaaS founders on how to approach customer success, and would love to include more experiences than just my own)

Will give a shoutout, attribution and a free copy of the course to anyone who shares an insight that I include in the guide 😃

Thanks!