Jus wanted an oil change

Went in for basic oil change 12-4-12 never requested high performance in 4 yrs I've owned my Durango . Week and half later oil light flashing flickering and staying on dash board longer than normal. Took it bac there 12-18-12 they said need high perf and chrged now I'm $86 into an oil chnge and the light is still on Oil light is not to play w b/ c engine can go Then they said I need a sensor to make the light go off Took my car to diff shop NO OIL PRESSURE . Smdh!!Done tore my car up.Jus pourin oil in my car and only recommend wiper blades When I called and returned to seek corrections to my unpleasant and very unsuccessful services staff became rude. Trisha Brian and Eric. Terry gave diagnosis he wasn't qualified to and mgmnt Trisha was very dismissive stating she wasn't apart of this or that I adv you are mgmnt you represent them you are their leader and further more I paid you!