For fastest replacement of broken or defective products call warranty directly:
For US warranty support, call (800)-360-7561.
For Canadian warranty support, call (800)-933-4750.
Or see this KB article for more information:
In the United States, call (800) 892-5234.
In Canada, call (866) 857-9850.
For all other regions, see the "International technical support numbers" below.
Microsoft Accessories Intellectual Property Licensing
Note: Conditions - Microsoft Support services are subject to then-current prices, terms, and conditions. These are subject to change without notice. Toll charges may apply to all non-toll-free numbers listed.