There are actually two different
capital one bjs, each with a distinct customer support number:
1. BJ’s One Mastercard:
Customer Service: 1-844-202-9570
Hours: 24/7
2. BJ’s One+ Mastercard:
Customer Service: 1-888-340-8281
Hours: Monday – Friday, 8:00 AM – 9:00 PM EST, Saturday 9:00 AM – 5:00 PM EST