I called other repair companies before this one. The technician came never resolved our cooktop knob problem. But my friend told me about this company, and so I tried. They sent their technician the next day after I made the call, and he was amazing! He immediately knew the cause of the problem and made it worked perfectly again. He was so knowledgeable and professional, and perfect for the job! I will not use anyone else than this company and its technicians! Thanks, guys! Highly recommended!