Payment Options

Customers of OS33 have a number of options when it comes to paying their OS33 invoice.

Pay by Credit Card

For customers who wish to pay their invoice by credit card, OS33 accepts:

  • Visa
  • MasterCard
  • American Express

To pay by credit card, complete and sign the credit card authorization form. 
When completed and signed, please return to form to OS33 by Email or Fax:

Optionally, customers can opt to share the CVV2 number of the credit card via phone:

  • Phone: (214) 717-4885

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Pay by Check

For customers who wish to pay their invoice by check, please ensure the check has the following details:

  • Payable to: OS33 Services Corp
  • Reference/Memo: Invoice Number

Please mail the check to the following address:

OS33 Services Corp
PO Box 737
Keller, TX 76244-0737

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Pay by ACH or Wire Transfer

For customers who wish to pay their invoice by ACH or Wire Transfer, please contact billing@os33.com to receive the appropriate routing details. 

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