express my dissatisfaction with service I received from Fairprice

Went to Fair Price at Bara to get couches which were on salesale for R3300 as i was about to process the payment one of the staff members told me its impossible for the couches to be sold at that price so they checked the system which also had the price of R3300 They told me there is a mistake from the head office and they changed the price right in front of me to R4800 i am so disappointed !