You can pay your Speedway Credit Card credit card either online or through the issuer's mobile app. Alternatively, you can also make a Speedway Credit Card payment over the phone at (888) 295-5540 or via mail. 

How to Pay Your Speedway Credit Card Bill:

• Online: To pay your Speedway Credit Card online, log in to your account and click on “Payments and Transfers”. Then, add a checking or savings account, and choose your payment date and payment amount.
• Through the mobile app: Download the app for Android or iOS and then log in to your Speedway Credit Card account. Then, tap “Payments and Transfers” and follow the instructions above to make a payment. 
• Over the phone: Call (888) 295-5540 and follow the prompts to make a payment. 
• Via mail: Send a check, along with the payment coupon from your credit card statement, to:
   
  Bankcard Payment Processing
  1620 Dodge Street
  Omaha, NE 68197-2210

Keep in mind that you must pay at least the minimum payment amount by the due date, which is located on your monthly statement. it is also worth noting that the issuer allows Speedway Credit Card members to set up automatic payments as well.

Ultimately, If you choose to make a payment via mail, make sure to always send it at least 5-7 days before your due date.

You cannot pay your Speedway Credit Card in-store.

Cardholders can call (1-888-295-5540) or mail in a payment or use an online profile to make a payment.

Simply call 800-642-0014 to cancel your Speedway credit card.

The Speedway credit card credit limit is very individualized and will depend on your credit history, income and debt. Most cardholders report initial credit limits of $1,000+, but it may be different in your case.

It's hard to say why your Speedway credit card application got denied.
You should be able to find out, as credit card issuers are required to disclose the reason for your application's denial in their rejection letter.