I have lost trust in Hyundai completely!!!

Took my car for normal annual service. They serviced the my car and I realized that the car made 2 loud beeping sound when I started the car. I called Hyundai brits and they denied everything having to do with the beeping sounds. They just said to me they would come back to me and 1 year later still no response. The problem was the so called technician deactivated the anti hijack system without knowing it. A qualified technician solved the problem by just 1 phone call.