Final answer:
To no avail means something was done unsuccessfully or without achieving the desired result.
Step-by-step explanation:
To no avail means that something has been done unsuccessfully or without achieving the desired result. In this particular context, the phrase 'to no avail' suggests that the company's efforts to address the matter were unsuccessful.
An example of using 'to no avail' in a sentence could be: 'The company invested a lot of time and resources in trying to improve their customer service, but to no avail.'
In this example, the phrase 'to no avail' emphasizes that the company's attempts to improve their customer service did not result in any positive outcome.