My ID refused to communicate over whatsapp. When I call him no answer and basically to get him through his call back, so I am like at his mercies. Is that normal practice? When I suggested to discuss with him on the reno site, he insisted that he not free and wants me to meet him at his office only. Since I am not familiar about the reno works, I actually prefer that he updates me on progress and explain some of the details. When I ask questions, he says that I don't trust him. Before sign quotation I requested that some detail dimensions be included but they insisted that they are professional and will give me the best, so no need to worry. Now when I suggest some things (like concealing some wiring or lay them in the most concealed way, he wants to charge additional) I am now regretting engaging him. But stuck because reno already started. Any advise?