Waterfall Security Solutions interview questions

Do not waste your time interviewing with this company. I went through 4 rounds of interviews just to never hear back from them. They had me meet with several people and do an assignment for them and then they ghosted me.

I completed two rounds of interviews and was offered the position. During the onboarding process, I was informed that I needed to pay 5K and complete compliance training for the client. After completing these steps and initiating the background verification process, I attempted to contact someone for further updates via phone and email, but received no response. This left me feeling disheartened, especially as I had declined another job offer in anticipation of this opportunity, and I have not received any updates regarding the job since then.