reference interview :- 1st round written aptitude speed ,distance and time , trains, upstream downstream 2nd round technical interview :- coding, software development life cycle, software test life cycle , why testing .?

Applied through a referral. Got a call from HR for skills confirmation. Asked to come for a F2F. Had two technical rounds follwed by VP round and then HR. Technical round were of average difficulty and VP round was to know background, education and past experiences. Overall interview process was OK and easy. I was told that you are selected and need to send in previous employment documents. No response from HR after sending the same. It's been a week and there is no response. If you can't afford to given an offer then don't waste people time.