This is a user to user forum, you need to email DTV directly.
https://support.directv.com/app/contact_us?ACM=false
There is also Caller ID spoofing software that maybe using that phone number. You may need to contact your phone company.
I just read one of the posts from a Google search saying that this is a attempt from someone pretending to be DTV to get you to call back and get your info to get access to your bank account(s).