How to reduce the annoying customers who only waste my time without the intent of doing business ?They require a free sketch/idea before they can decide .
I work in the landscape architecture design field . Customers usually call to say they have a property / area they need to design ...to give an estimate or an offer , this requires visiting the site , having a couple of meetings with the client , maybe some pictures of the site and then to provide a sketch ..! this is time consuming without any charge because the customer is not willing to pay before he can see the value of the service i may provide to his property / area. So the company profile and the previous experience is not convincing enough for most of the customers to pay before they can see the value for their own project.