Contacted Azmi but was a bit disappointed (irritated) that he wanted to ask for money just to come inspect and to provide a quote and options for the treatment. Based on the feedback provided here I was going to give him a chance and didn't even contact any other companies.

Because of this, I cancelled the appointment and contacted another person instead. Will see him this weekend and share his details if he is reasonable.

Decided to go with NLC. Feel more confident with their service. For reference, their price for 20x40 feet house (based on built-up, not land size) is RM3,600 for both baiting (to exterminate current termite colony) and injection. If baiting only is RM1,600.