Same scenario for me, I called on a Saturday and it was refreshed on my credit report on Wednesday, but it will not notify you, you have to click on the account details and will show the new balance.
Hope this helps.
Do you use WalletHub? If not, sign up, as you get free TU report updates at 6am every morning. Also alerts from free services like CS or CK often arrive quicker than the paid service from MF.