Final answer:
When a prospect expresses dissatisfaction with the service from the incumbent supplier, it is important to handle the situation professionally and tactfully. Offering a faster on-site service as part of your proposal is a better approach than discrediting the competitor's service without offering a solution.
Step-by-step explanation:
When a prospect expresses dissatisfaction with the service from the incumbent supplier, it is important to handle the situation professionally and tactfully. Instead of discrediting the competitor's service without offering a solution, you should offer to provide faster on-site service as part of your proposal. This shows that you are attentive to the prospect's concerns and are willing to provide a better service than the current supplier.