McDonald's at 3459 Mount Diablo Boulevard, Lafayette, California.

Rude inept manager screwed up brewing coffee. Took 3 requests to get full order. Completely watered down coffee was undrinkable, eggshells in Egg McMuffin, no polite requests about why we were still waiting to get orded completed, but lots of attitude from manager. Store was not busy. Younger members of staff were polite and efficient but manager kept messing with them. Manager pulled out coffee/filter while it was brewing and let water run into coffe pot. Manager needs remedial customer service training and apparently training on basic McDonald's operations. No apology nor explanation was ever offered. Manager is incapable of running this McDonald's.