I agree, they exactly know from which lotto terminal that ticket was bought. I am not doubting that.

I agree that CCTV may be able to tell that Mr. Willis bought it. But one possibility is the CCTV tape must have been wiped out. They don't keep the recording for long time...

Yet, there's no CCTV which could have recorded at the time when somewhere else Mr. Willis was selling that lotto ticket (or exchange) for a buck to Joshi, coz he needed that precious buck to come up with adequate amount to buy a pack of beer. Well, who knows he could be a complete teetotaler.. but we don't know yet. Or he was trying to buy that pack for a fug...

Police might have matched all his grandchildren and all his wives birth-dates with the winning numbers... but still selling that ticket to Joshi cannot be ruled out.

There's a possibility for Joshi to sue these guys.... but as I said, he must be in hiding for now... coz you know the racial discrimnation against yellow skin, and Joshi could be destructed by the law authorities.