Kiwi Collection interview questions

My interviews were with the upper management because the company doesn't have HR. I had my first interview over the phone when we discussed my background, salary expectations, etc. Second and third interviews were in the office management and rest of the team. After 2 months of interviews and lots of back and forth with them, they called me and offered me the position. Again then, we discussed my salary expectations (which was never a problem) starting date, etc. I asked if the offer was firm so I could hand my resignation letter to my employer and they said "YES". they even mentioned the offer was firm but they were retyping the contract. The only reason why they couldn't send me an offer via email at that moment was because this person I talked to was attending a conference and she/he had to retype the contract him/herself (No HR at KIWI) Then 2 days after, I get an 2 lines' email from the same person, taking the offer back due to "circumstances" . After my shock, since I had already resigned. I emailed twice and try to contact them several times to get a proper explanation, but they never responded to my emails and/or returned my calls. THEN when I tried to apply for unemployment due to what had happened, they did respond to unemployment by saying they never offer me a job nor we discussed salary, etc. Luckily I had emails from them that said the opposite. TRY TO STAY AWAY FROM THIS COMPANY. IF THEY ARE WILLING TO DO THAT TO ME . THEY WILL BE WILLING TO DO THAT TO YOU.