Pratham Vision interview questions

NEVER GO FOR INTERVIEW (FRAUD COMPANY). I went for interview and got selected for web developer profile then they send me LOI and asked me to first send me resignation copy of your current company then after, they will release the offer letter. I did so and sent the resignation copy. Then after 2 days I did not get any offer letter then I called again and again and I did not get any response from them. Once I got connected , they called to have meeting once for a discussion. I went for the same they deny to give the offer and after lots of discussion they asked me join current salary.Even I do not have any other offer as of now, but I will never join this type of fraud company.