Not So Original
Is it really that awkward when you call someone and it goes to an automated message by the telecommunications company? No, it isn’t. Some people don’t want to receive phone calls—i.e., everyone in the world—so just stick to texting and e-mailing each other from now on.
Tesco Mobile decided that it had had enough of all this “awkward messaging service” nonsense and spoke up. They reminded the OP that their “That awkward moment when” meme was not original. That’s pretty harsh, but then again, Tesco has probably read this more times than they can remember.