Changes quote

Pathetic service from Julian the owner he sent me a quote charging per hour estimated 5.25 when his technician did the work within 3hrs and I requested refund for the 2hrs he changes and says he sent 3 people instead of 2 so the amount charged is correct because of 3 people and no longer about the rate per hour as stated on the quote and then he delays to send the electrical compliant certificate no longer takes my calls or replies to whatsapp messages truely unethical service