2013 Sonic chimes even though the key isn't in the ignition

My car chimes when I open the driver's door after putting it in park and taking the key out of the ignition.  I cannot lock the driver's door.  It looks, then immediately unlocks.  The only when to lock it is when the passenger door is open.  The only way to unlock it is putting the key in the lock on the driver's door because the key fob doesn't work.  The 1st time I took it to the dealer they had no clue and weren't very nice.  The service manager put graphite in the ignition the 2nd time.  That worked for almost a month.  I called him today but haven't heard back.  This is an intermittent problem.  How do I get it to go away?

Please and thank you!