Swadesh Software interview questions

I interviewed at Swadesh Software, the level of interview was easy and I got selected after 3-4 weeks of wait, their HR messaged me told me that "We are interested to hire you " and I even talked to one of their project manager and was about to get an offer letter but then they were just ghosted no replies nothing and if they pickup call by any chance then there are just excuses that "I forgot to send it, sending it in an hour or so".

Standard questions asked.. Interview took 15mins. Gentle behaviour of inteviwer. He was asking me about my reason of leaving my past company. Why I want to leave the current company.. what salary do I expect..