Bob's Big Cup

I ordered 2- 20oz Carmel Machiato's. Total was $16.47 ? When i asked why the drinks where almost$7.50 each the attendant just looked at me and said they charge for a mocha with flavoring.
Ok so your sign says mocha $4.99 flavor .50 per shot that was the only answer i got. Coffee had no flavor other than burnt. Over priced and unable to make simple drinks