Disrespectful manager, bad customer service

I just went to PEP freedom park to buy my small stock for my business , around 12:55 Sunday 01 November 2020.I normally buy Sweets from them to put on my ice creams to decorate my my ice cream. This time around they had a wrong price on my sweets, when I went to pay, I then discovered that the price was actually not what I saw. I then asked for the store manager to correct the error, instead I was told that they were not in the correct place I should leave them or pay more. There was no other price there, other than what I saw. I even asked them to check the camera. The manager was just loughing. I felt so disrespected, I think it's becouse she was just seeing a packet of sweets not the impact it has on the customer or the reoson behind my purchase. I will not be buying there anymore. I also think she must be corrected.