Contact Us


Phone: 713-778-6300

Fax: 713-778-6360

Branch Hours of Operation

  • Monday-Friday   8:00am – 4:00pm
  • Wednesday        9:00am – 4:00pm

Drive Thru 

  • Monday-Friday   7:00am – 6:00pm

Using your touch tone phone you have access to your account information 24/7 using Voice Response. Simply call 713-778-6300. 

Email Us

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 Messaging.

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 representative, online accounts, etc.)

Mail Us

Memorial Credit Union
7789 Southwest Freeway, Suite 175
Houston, TX 77074

Report a Lost or Stolen Card

Lost/Stolen Debit MasterCard® Contact your local branch or call 24/7 services at (833) 933-1681

Debit Mastercard® Customer Service: (501) 246-8497

Debit Mastercard® & ATM Card Activation (833) 998-4585

Debit Mastercard® & ATM Pin Change (833) 998-4585

Cardholder Disputes
If you have a transaction dispute on your Debit Mastercard®, you will need to collect the following items to bring into your nearest branch in order to submit the dispute.