Price up and can't pay

I placed an order at 11pm yesterday cost R99 plus R25 delivery but I wanted to query it because I would collect from a pickup point. Order was cancelled before 24 hours and its now R168 plus R25 delivery. I contacted help desk which I couldn't do last night. Tried to pay twice with credit card but both failed. Easier to buy it from a store. I will pay R99 please