Phone 713-778-6300 Fax 713-778-6320
- Monday – Friday 8:00a.m. – 4:00 p.m.
- Wednesday 9:00 a.m. – 4:00 p.m.
- Closed Weekends
- Using your touch tone phone you can get account information and perform transactions 24/7 using the Voice Response, simply call 713-778-6350
- Holiday Schedule
Methods for Sharing Confidential Information. Confidential information may be securely sent or discussed through the following MCU systems:
Secure Messages is accessed through MCU Online. You must be enrolled in MCU Online to use Secure Email.
Encrypted Email – If a MCU representative sends you an encrypted email, you will be asked to login and create a password before you can even view the email. You may reply to that email and your message will also be encrypted when it is sent back to MCU.
Email Us (general, member service)
- Lost/Stolen Debit MasterCard® (800) 851-4859
- Lost/Stolen Credit Card (800) 820-8450
- Debit MasterCard®Customer Service: (800) 851-4859
- Debit MasterCard® & ATM Activation (866) 619-0245
- Debit MasterCard® & ATM Pin Change (800) 851-4859