Paying for a call out, no work done. FRUSTRATED.

I had a problem with my plumbing. I asked on WhatsApp for a quote to find the leak an d fix it. They said R2480 ex vat. I agreed and asked them to come out. On arrival I showed the plumber the leak location. He did not do any fixing of the problem. He said that the quote was only for a call out and leak detection, it was a miscommunication. I had to pay for the call out where nothing was fixed, and no work was done. I feel wronged by having to pay for something I did not get any value for.