Complaint Review: Taco bell

This is the message I sent on a Customer Feedback Form for Taco Bell (due to a 1000 character limit, it is shorter than I wanted.) I tried to call the store before visiting the website, but the phone was never picked up. I called three times. No one ever answered. 

I usually purchase a meal from Taco Bell (at least once a week). The majority of the time my meal is not correct. As a vegetarian, I request to have any beef replaced with black beans. Most of the time I am charged 30 cents extra because of this. I don't understand why I have to pay extra just because I am a vegetarian. 

I went to this particular location tonight as a convenient meal after work. I ordered Burrito Supreme without beef, substituting black beans (for which I was charged an $0.30). I also ordered a couple other items, with which I ordered a drink. The workers were very slow with production of my food and, as I observed while waiting in the Drive Thru, the orders before mine. After I paid and received my meal, the young man said "Good night." and closed the window. It wasn't until I was down the road that I realized I did not get my drink, for which I paid $2.19. 
For me, this is the last time I will be eating Taco Bell. I am done. And I will be sure to share my experience.