Dear (recipient's name),
Thank you for informing us of the problem you've been experiencing with your new (item). We are happy to take care of the issue for you, but before we do we need some more information from you. We need to know the model number and year the (item) was manufactured. You can find this information in your owner's manual.
Once you have this information, please give us a call at (phone number) and we will be happy to take care of the repair.
Sincerely,
(your name)