I took a business associate for food and drinks af...

I took a business associate for food and drinks after an appointment to Baci Grill to show her my appreciation for her services. The food was good. We ate and had drinks at the bar and our bill was over $100 and we gave a $30 tip to the bar-tender. Then the client I was with ordred a 4th drink, which we were served. Both of us felt it was 'weak' at best, and questioned the bar-tender (Shannon) and she said she didn't feel comfortable giving us another drink. (??) which, by the way, we were being charged for! We complained and ask for the manager, whom she said was not available. When she walked away my client stated she noticed Shannon had given more attention to a couple and the male customers, which she had observered while we were there ( we were both female). Once again we comfronted the bar-tender, and she retorted she just felt we were in conversation and didn't want to interrupt and that is why she showed more attention to the others.
While I support the bar-tender's right to assess the situation ( Right or Wrong) and determine that we should NOT be served another alcoholic beverage in an appropriate amount of time (her call), however, why were we then being charged for the drinks??? And why were the drinks only taken off the biill when we complained? She offered to return our tip when we comforted her on the FACT that she showed more attention to the male and couple clientelle, but it was too little too late, (KEEP IT) and my intention, AS A WOMAN, is NOT to frequent this establishiment. Thank you very much!!
And Shannon, be ASHAMED that you "think" that you 'loyalty' or 'bread' is buttered by MEN!! Think again!!!!!!!