How do I advertise my business on Directv?

Hi,

How do I advertise my business on Directv? I want to buy commercial spots for my business and I can't find a contact number. Is there a sales number for Directv? I want to buy adds in Cape Coral/ Fort Myers/ Naples, Florida area. Please help. I searched the internet for over an hour with no luck. Awaiting your reply. Thank you, all. 

Dave R.