Unhappy

This is unacceptable why was I billed for 5G premium a pro amount I never requested to upgrade to it I just looked at the premium product information then left the web page the only ting I did was downgraded to the R499 package now I see I was billed for a premium service when I didn't upgrade o should of only been charged the R499 for my new package that I downgraded to because o was on the 699 package before rain fix this