I applied online and then received a phone call which lasted for about 20 minutes and was essentially a first round interview with no technical questions.

The interviewer was incredibly nice and gave an extremely positive description of the role and the company, he answered some questions that I had and my overall feeling at the end of the call was that it went well.

He never got back to me though to confirm if I was through to the next stage. Also, I think it's a bit unfair to call and conduct a 20 minute interview with no prior warning. My experience is that the company usually emails you first to arrange a time. I don't have my interviewer's email address as a result and he called me on a general line so I don't really have any way of following up with them on my application.

I'm sure they're a great company but unfortunately my experience with them wasn't the best.

Tell me about your previous experience.