I went into Locust rendezvous after having dinner in Center City on a Saturday night. It started off to be a good night. It was quiet because it was still early and out waitress was paying adequate attention to us. I was ordering Vodka mixed with an energy drink and probably had about 5 drinks during the course of the night. When we got our bill, I read that I was being charged $9.50 for each drink that I had, $4.00 for the vodka and $5.50 for the energy drink. Normally, buinesses who charge such a high price for this energy drinkgive the customer what is left in the can since only half of the energy drink is going into making the mixed drink. That was not the experience here. I was charged $5.50 for half of a can, and then for my next drink, I was charged $5.50 for the remainder of my can. That is $11.00 for a can of this energy drink. When I nicely asked the server about the charge, She stated that that was their policy and walked over to the bar and picked up a half of a can of the energy drink and handed it to me. At this point, I walked over to the manager and asked him about the charges. He, without taking his eyes off of the television that he was watching, stated that that was their policy. I then walked back over to my party who was getting their money together to pay the bill. The bill was $99.75. Even though our waitress had become extremely rude when I questioned our bill, we still left her a 20% gratutity. When walking out of the bar, I was cornered by 2 managers who asked me why I didn't tip the waitress. They were extremely unprofessional in their mannerisms and tone of voice and would not allow me to speak. I am not only trying to make contact with the general manager regarding this matter, but also notifying the appropriate agencies regarding their inappropriate practices.