Hi ..., 

I hope this email finds you well.

Thank you for bringing the issue with your umbrella to our attention. We sincerely apologize for any inconvenience this may have caused, and we are committed to resolving the matter. Due to the upcoming holiday break, we plan to schedule a visit after January 6th to inspect the umbrella and address the issue promptly.

Additionally, we would like to propose a session with our technician and your maintenance team to provide training on proper umbrella operation, along with useful tips and instructions.

We will confirm the exact date and time for the visit as soon as possible.

Regards,