Swiffy horrible service,does not pay Spar competition winners

Beware of Swiffy they contracted by Spar to run and pay for Spar Mccoy competition,they failing to pay people who have won.since i received congratulations message...awaiting for voucher and pin nothing....John Kananda is not really assisting...he keeps saying he will check and give feedback...i think they tryingbto run a little ****!!