I bought Eyewear with a price tag of 99

I bought Eyewear with a price tag of 99.99 when I got to the till it was 199. 99,the cashier called the manager and we went where I took the glasses and the price was 99.99...I believe because it was the store's mistake in to changing the price tag, I should buy with the price I saw. The Manager Ferguson Phasha, immediately was dismissive, argumentative, irritated and did not want to resolve the matter. I found him very rude, I asked for another manager, he told me he is the manager so basically I want to report him to himself. I left without the glasses and no solution. Can Dischem look into because as a regular customer there, I'm very disappointed.