FED UP CUSTOMER!!!

I am appauled at the customer service. I am right now on a line and been waiting for now 16 minutes and counting to speak to a consultant for cancellation of my contract. WHAT IN THE ACTUAL F!!!!! Why does it take 16 whole minutes to reach one single person???????? Also, why can't I just do this on the app or website? Why do I have to speak to a consultant? IT SHOULDN'T MATTER!!!!! I just want to cancel this useless data contract! I get reloaded with 15G data on the first. Yesterday was the first and ****, a whole 15G disappeared from my phone and you know what's funny, I have and use WIFI at home. So what in the actual F!!!! Cancel my contract NOW! Someone needs to call me ASAP to get this done. Please and thank you.