Beware of hidden labour charges, call out fee might get 'dropped'but labour fees make up for it

Called Appliance Man icw my oven that needs fixing. I was quoted call out fee of R600 and told that if I accept their quote for repairs, there will be no call out fee. The guys were at my house yesterday afternoon and quoted me R1242 for repairs to the 'mother board' that connects all wires etc. I accepted it. Nothing else was mentioned to be paid. Today I get the call that they found the part and that total cost would be about R1900. It now has an extra labour fee of R650! Called the owner back and he sounded puzzled and said he would call me back as he needs to speak to the technician first to hear what this is all about. So later tech tries to justify that he did tell me about the labour fee lol I will not be bul**** into extra fees if it wasnt declared upfront. I was aware of first given amount only. So I now will pay for call out fee and not repairs. No ways I will pay almost R2000 when quoted R1242! Absolutely shocking to know I've waisted my money like this.