Indeed interview questions

I Submitted online application and was contacted approximately 3 weeks later by email for a phone screen. I booked a time via via the recruiters schedule and was contacted at the time scheduled. During the phone screening we discussed my background and relevant experience to the position I was applying for and went over my background and interest in the position. This went well and the recruiter advised me that she liked my background. After this the recruiter asked me for my availability for an in person interview and advised that she was sending over writing sample email that day. She stressed the urgency of getting this completed as soon as possible as to not delay the interview process. The recruiter even advised to contact her back if I had any additional questions. After a day of not receiving the email I contacted the recruiter to advise via email and was never contacted back. I waited a few days and called the recruiter and never heard back. I still have not heard back from the recruiter via phone or email over a week later. I’m not even sure if this was even a real opportunity. Very sketchy.