Final answer:
A single-bagger at the customer service desk may apologize for the bug in the soft drink and offer a replacement or refund. A double-bagger may offer the same solution and consider offering a coupon or discount as well.
Step-by-step explanation:
In response to the complaint from the customer who found a bug in her soft drink, a single-bagger at the customer service desk in a grocery store may apologize for the inconvenience and offer a replacement or refund for the soft drink. They may also assure the customer that they will address the issue to prevent it from happening again. For example, they might say, 'I'm sorry to hear about the bug in your soft drink. We apologize for the inconvenience. We can offer you a replacement or refund, and we will make sure to investigate this issue to prevent it from happening in the future.'
A double-bagger, who has more authority and can make decisions regarding customer complaints, may offer the same solution as a single-bagger. Additionally, they may consider offering a coupon or discount on the customer's next purchase as a gesture of goodwill. They may say something like, 'We are deeply sorry for the bug you found in your soft drink. We understand how concerning that can be. We will replace or refund your drink, and we would like to offer you a coupon for a discount on your next purchase as a way of making it up to you.'