Dear K.Weeraphong,
Thank you for helping us to better understand the issue over the phone. Based on our discussion, seems the issue cannot be solved over the phone. Service visit is needed for this case.
Kindly note that we are trying our best to rearrange our service schedule to visit you. Unfortunately, they are all in the distant location and not yet complete what they have assigned earlier.
Our admin will get back to you as soon as we can reschedule and give you the best available service schedule.
Thank you very much for your patience and kind understanding.