The company's recruiter sent an email to set up a phone call interview, so I scheduled one. I wanted to know about the opportunity available from this unicorn. However, it ended up being negative.

Perhaps the recruiter did not have much knowledge about tech, but that is not an excuse. The person with whom I had the conversation simply denies people who have not used specific technologies. She denied me because I use C# at my current job. I did not know what to say after hearing her responses.

What stack do you use?