I need to escalate an install missed this past Friday due to an incorrect ATT&T phone number

Richard [edited for privacy-please do not post personal or unique information such as but not limited to full names, employee ID numbers, email addresses, phone numbers, account numbers, etc.]

I need to escalate an install missed this past Friday due to an incorrect ATT&T phone number on the technician's work order. I was to be called to allow access to my home, however, the tech left once he called and got a wrong number message. I ordered AT&T UVerse TV and Internet December 19th 2018. How do I contact Regional Manager to ask to escalate the install date for tomorrow.