Intentional Mistake ??

In the promotional video for Airtel Super singer 2008 finals 2, there was a mistake in contestant numbers.. Contestant No SS 15 was shown for both Ravi and Renu and ideally its supposed to be contestant no of Renu's.... But I guess when this promo was put up the voting deadline was reached.. not sure when this started.. but this is very bad mistake from the channel and that too at this level..