I won't name and shame any particular ones, but I will say I've found myself regretting signing up for trials of certain services because of the almost sycophantic attention I'd receive from the oh-so-personable and friendly CEOs who make it a point to personally message all customers. I usually respond, initially, but then it quickly becomes pushy and intrusive, e.g. "Hi, I've noticed you haven't used [x] feature yet." "Hello? Are you getting my emails?" "Hello?"

I don't mean to be rude, but I didn't sign up for the "omg you're so friendly and amazingly helpful" show. I just wanted to try the service out. Kindly stop breathing down my neck! :/