Spark Energy interview questions

It was a two part interview. The first screening interview only took about 30 minutes; basically the hiring manager going over the goals of the company and what they were looking for in a job candidate. The second interview lasted 2 hours over the course of a casual conversation and describing what I would be doing for Spark Energy.

Applied online, didn't hear back from HR until three weeks later. Scheduled a phone interview with the hiring manager in three days, which lasted for 40 minutes. The conversation went well, I think the HM was looking for a person with an interest in data analysis and also having a solid background in SQL. He promised to let me know the next step in two weeks, however I never hear from them afterwards. Not that professional.