St Augustine/Bermuda/Centipede?!?

I'd prefer to keep the St Centipede or whatever it is The Bermuda is creeping in from I have no idea where next to the driveway. None of my neighbors has Bermuda so I'm not sure where it come from. From the street it looks great but when u get on top of it is when you can really see the difference.

Lol.....true statement!! Thanks bud

I'm exactly one mile from a golf course but other then that there is none in sight. Will St Augustine grow ok in the midlands of South Carolina?