Synechron Senior UI Developer/Lead interview questions

I gave couple of technical rounds interview and one round of HR interview. In HR round one of HR had all the discussion with me including salary and everything, atlast said that they will draw offer in next month as they are currently having appraisal cycle going and can’t release any offer letter, I accepted and said fine I will wait for that, since then it’s been two months already and there is no response from anyone, even HR is not picking up calls or answering emails. Simply wasted my time going through all the interview process