ARB Incorrect pricing and spec sheet

I contacted ARB Electrical Wholesalers in Pretoria for pricing on flood lights. The representative I spoke with said he would send me the prices via WhatsApp. He sent several photos, and I asked questions based on my client's requests. After a few back-and-forth messages, I asked for a price based on the attached reply he had sent me.

Instead of addressing my request, he shifted the conversation to a remote. I clarified that I only wanted the price for the flood lights in the photo he had sent. Eventually, he provided me with a price. However, when it was time to purchase the flood lights, the price ended up being double what he initially quoted.

It became clear that he had given me the wrong price for an incorrect product. Now, they are refusing to accommodate us. He even sent me a spec sheet, which I forwarded to my client along with the pricing. Now he admits that he provided me with the incorrect price, yet ARB has not offered any assistance in resolving this issue or honoring the initial price. The representative's name is Goldie, as stated in his WhatsApp message. Not once has ARB called me to apologize or rectify the situation.