Micah LeeIf you're still on Twitter, go into your settings and delete your phone number from your account, if you've added it. If you're using it for 2FA, switch to an authenticator app instead
General Wise Ass 
I have never used a phone number for twitter. I use a throwaway email(s) to make various accounts on different social media platforms. The day General (Maor) Wise Ass vanishes from the platforms is the day I will delete the throwaway emails, too.