Misleading Signage and Adverti*****ts

I had purchased the Colgate products which included 2+1 free on 21 July 2018 at the Hillcrest store. I noticed that I had been charged for all and not as per the store signage 2+1 free. Upon asking staff, it apparently has to be all the same Colgate products which is very misleading as the signage says "ANY Colgate product".

Please can I get this rectified immediately.