Disappointed and Devastating

I recently purchased a 30 cm Gourment Roaster A3064. Which to my disappointment was not what I expected. I therefore contacted the Cape Town customer care I spoke to a consultant Melanie Berns who cut my call twice and actually had attitude. Upon receiving the pot I noticed the inside of the liq was discolored nevertheless I still cooked on heat setting 3 for the first time in the pot on Saturday the bottom of the pot caught so badly I couldn't understand why such an expensive pot would do that my food actually burnt. I eventually had to turn the heat down to 1 to complete cooking my food. I am very disappointed and was thinking of getting a whole set but thankfully did not after the way I was treated. I want a refund or a replacement. I will definitely not keep a pot I paid cash R5741 for..... Please can I get assistance ***