If the service matched the quality of the burgers then they would deserve five stars.
If only they had just the basic service I would forgive them but when the servers are standing at the back of the restaurant talking and you have to ask if they would mind offering you a drink and take your order, then I sorry it just does not matter how good the food is I am not going back.
There are just to many good restaurants around to have to accept such poor service so "Rhino" your service sucks, if you don't like the service industry leave.