The phone number of Starbucks customer service 1800-782-7282. The business hours of Starbucks customer service is 4:00 am to 11:00 pm, throughout the week (Pacific Time). The Starbucks customer service is usually open throughout the year except for this 6 US holidays, 1) New Years Day 2) Memorial Day 3) Independence Day 4) Labor Day 5) Thanksgiving 6) Christmas. To write to Starbucks customer service, select the department you need help with and an online form will be available to fill and send your queries.

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