Oil Change RIP OFF!!!!!!

RIP OFF!!!!! Don't go there......I took my 2014 Chevy Sonic to them for a basic oil change. Which according to their menu board was approximately $39.00. When I went to pay for the service, the bill was $84.00!!!!!!!!!!!!!!! So I asked the cashier why and her answer was I don't know. Yep, I was a little pissed. So said that I wanted someone to explain how a 39.00 oil change became $84.00. So, someone claiming to be a manager came out and said that the there was an additional $34.00 "Upcharge" for synthetic oil and a $9.99 "Upcharge for the oil filter!!!! No one bothered to tell me any of that, and I told the manager so. His response was "well, its on the wall" These folks are a rip-off.....don't let your family be victimized by these jerks!