Dazzle's great but think I got ripped off

I was there for about half hour when Dazzle came on stage - totally my type. Took her back - she's great - highly recommend- she's beautiful, probably 40 and partially deaf. Very accommodating and sweet. Total Ldk after 3 or 4 songs. Went to pay the monitor/ bouncer. Dazzle said 3, he said 4. I swear I have him 4 20s and started to walk away. He said "your 1 short" and showed me 3 20s. I didn't argue because I need to keep a very low profile, but don't trust him