In acontract for the supply of a service where the supplier is acting in the course of a business there is an implied term that the supplier will carryout the service with reasonable care and skill.
When you have confirmed a business contract always carryout the terms.
生意上定了合同就一定执行条件。
3
If the Contractor fails to carryout any obligation under the Contract, the Employer may by notice require the Contractor to make good the failure and to remedy it within a specified reasonable time.