Final answer:
When the quantity delivered by the seller is less than contracted, the buyer may negotiate for various solutions. If the seller delivers more, the buyer can accept, negotiate, or refuse the excess goods.
Step-by-step explanation:
When the quantity delivered by the seller is less than contracted, the buyer may have several options depending on the terms of the contract. They can negotiate with the seller for a partial refund or a discount on future purchases, request a replacement or additional goods to fulfill the contract, or terminate the contract altogether and seek legal action if necessary.
If the seller delivers more than contracted, the buyer has a few options as well. They can accept the excess goods and pay for them, negotiate with the seller for a discounted price or a refund for the excess, or refuse the excess goods and only pay for the contracted quantity, based on the terms of their agreement.