How does a salesperson have to treat a customer?

You can't have sales growth if you treat the customer strictly and rudely; this attitude is more likely to make you lose a potential customer. Establishing a healthy relationship is essential. To keep them interested in buying, always use a friendly and casual tone of voice, ask their names and how they'd like to be called, and show you care about them. Source: Business Capital Photo by Nick Fewings on Unsplash