Customer Service

Thank you for shopping at the MOS online store. 

For online inquiries contact:

Customer Service
Phone: 617-589-0320 (outside the US, first dial the appropriate US access code)

Placement of Order
Once an order is placed you will receive an automated response to confirm your order has been received. Your order will be reviewed and processed within 1-3 business days. You may be contacted by a customer service representative with a revised order total or any inquiries pertaining to your order.

We accept the following major credit cards: American Express, Discover, Mastercard, and VISA.

For more information regarding shipping rates and times as well as customs and duties fees, please see Shipping Info.