Hi there! I understand it can be frustrating when you're trying to register but you get a message saying your phone number is linked to another account. Let's troubleshoot this together.

First, can you confirm if you might have created another Speedy Rewards account using that phone number in the past? If that’s the case, you might need to access that account.

Here are a few steps you can take to resolve this issue:

1. Check for Existing Accounts: Try to remember if you ever signed up for an account using that number. If you did, you may need to log in using that phone number and reset your password if forgotten.

2. Account Recovery: If you think you have an account linked to your number but can’t access it, you can try recovering it. Look for a "Forgot Password?" option on the Speedy Rewards login page.

3. Contact Customer Support: If you don’t have another account or can't remember the login details, it’s best to contact Speedway's Customer Service. They can verify your phone number and help you resolve this. You can reach them at 1-800-643-1948 during operating hours (M-F 8:30 AM - 5:30 PM EST) or submit a query through their website: Contact Us.

Let me know if any of these steps help or if you have more questions! Are you satisfied with the solution I provided?