Subway complaint: Fired..

I worked for Subway.. I was taken off the schedule this past weekend and I didn’t know why. I woke up to a text message asking me to come to the store so I could be talked to. I was terminated because I supposedly said a racial slur.. And I don’t know what she was talking about. She told me she didn’t know it was what she heard.. I will be the last person who is racist.. I got picked on in middle school for dating a black guy. My favorite rappers are bone thugs n harmony and also have krayzie bones logo and Caine tattooed on me. My soon to be ex husband is Puerto Rican.. I am by far chance on being racist.. My friends are out raged bout this and know me more than I know my self.. My main manager I called and she knows me. I left her a message and told her to get to the bottom of it cause something isn’t sitting right with me.. She told me she’d talk to my boss and call me back. I still haven’t heard anything from her yet.. And I left my husband after 20 years last year and have a 3 year old.. I thank you for hearing my complaint..