Haven Technologies Full Stack Developer interview questions

Recruiter reached out on LinkedIn and I looked over their job description and thought it would be a good fit, so I applied. It has since been 2 months, so I guess that counts as a ghost

First behavioral on-line interview went really good. Then they scheduled a first on-line technical interview. The HR person behalf of the company mentioned it will include: - Discussing technical aspects of your current role; - System design; - Frontend backend oriented questions; - Framework specific questions, depending on time; However eventually the interview was somewhat about my current role but mostly on algorithms, data structures, design patterns and SQL. Topics that I'm familiar with, just didn't have the chance to go over them since I was expecting a completely different interview. Too bad I spent my weekend preparing for a system design interview and then the interviewer just made up an interview of their own. I think if it is agreed upon that an interview will be about some topics - the interviewer should stick to the plan, as a matter of ethics.