False advertising

Hellopeter I pawed a item worth R12000 for R1700 with cash crusaders krugersdorp I wanted to go extend my items date found the store closed and on their website it says they open at 9 till 5 on Saturday but found the store closed at 3:30 called one of the buyers who works cash crusaders to ask about time he said there's nothing he can do I waited till Monday called the store asked to check for my item I will come pay when I can cause I work during the week and told them about their false advertising now they want me to buy my item for R4000 there's nothing they can do but to buy it back.