Receipt of potential scam call said to be ATT Support,

I have received a suspicious phone call wanting me to enter a Customer ID on my computer to see who is attempting to use my att.net account to access porn sites and potentially making purchases under my name. The phone number involved is 509-776-6014 and is supposed to be located in Portland, Oregon, and used my name and username for my ATT.net email account.

I have been scammed before and do not want it to happen again.