I sincerely apologize for the inconvenience.

Meaning

A formal expression of regret for causing trouble or difficulty.

Examples

• John: 'This product is faulty; I'm very disappointed.'<br>
• Alice: '<b>I sincerely apologize for the inconvenience</b>, John. We'll arrange a replacement immediately.'
• John: '<b>I sincerely apologize for the inconvenience</b>, Alice. We're working to prevent this from happening again.'
• Alice: 'The delay caused significant disruption to my schedule.'<br>