Nestle review: price

i have been buying Nescafe Blend 43 500g tin for the last 12 months when Coles advertised that the price is down down to $16 and staying down also the Milo Nestle 1.25kg is down down and staying to $15 down well today 11th January 2015 at the Coles Arana Hills store these products scanned at Coffee Nescafe Blend 43 500g $20 a tin and the Milo Nestle 1.25kg $15 the prices were checked to see if this is correct. I was shocked at the increase and also saying that Coles are falsely advertising if Coles are only going to do this then you advertise that they only staying for a certain time staying down down and staying down. I expect a reply from you asap on this matter. My Email address is marg.[protected]@hotmail.com