If you like to pile on the toppings, Uswirl is one of the frozen yogurt chains that offer lots of toppings of different varieties. I like that they offer several different sauces to top the yogurt - magic shell chocolate being one of them :)
I'm not in love with the yogurt itself, it's not bad but I've had more flavorful yogurt elsewhere.
There definitely is a lack of good customer service here. It was good when they first opened, but lately it has been hovering between mediocre to just plain unwelcoming.