OK foods Mafikeng have ***** practice

I took charcoal with a price of R47 and when I got to the till the price was inflated to R67 I told the cashier and she went and came with a newly printed price. I went to the manager who said that he can't assist since he was not there when I took the coal. I was not alone and was sober and sincere. I had to leave groceries of close to R1000 having wasted my time in that store. Mafikeng people should be very careful of the dishonest pricing and practices in OK foods Mafikeng