Being overcharged for no reason?????

I requested a ride this morning, on the Uber app it was R151, then I had to upgrade for R35 for a quicker pick up, and it went up to R 186, I accepted and my driver came. To my surprise I my account was debited with R 225. How? Why? I am just so annoyed, cause this is just bull****, that is a huge difference between the R 186 and R 225. Being overcharged like that is a no no. This is just ridiculous.