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If you have any questions about your bill or want to dispute any Charges, please contact us by visiting www.T-Mobile.com, by calling 800-937-8997 or 611 from your Device, or by writing to T-Mobile Customer Relations, P.O. Box 37380, Albuquerque, NM 87176-7380.

T-Mobile will gladly assist you with your Returns. You can return or exchange a Device or accessory (“Device”) for a refund within 14 days of the purchase or lease date of the original Device .

On a mobile data plan, using more than your allowance each month usually attracts a surcharge, or your provider may slow down your data connection . Your provider may automatically give you the extra data as a top-up and charge you for it as you use it. This extra data is sometimes called an add on.