Pep Brentwood park

I bought a phone from pep store Brentwood park as I needed a phone. There price displayed was 3799 and charged me 3899. When a asked they are to sell it as per consumer rights price advertised they said it's too much to cover and pay in from there side take it or leave it. I had no choice but to buy it. I have all the photos to back up my setuation can pep please refund me my money and I hope they have more respect towards grabbing there customers and shoving them when taking photos to lay complaints. OEP SA please sort this out. I will never shop at pep again rude and diss honest and no customer respect.