KMcVay

Hi, yesterday I enabled internet access for my sprint phone. I was currently browsing the internet on my phone till then and when I looked at my usage details online, I noticed that I have 6247 under Addition Usage of Vision Data Home & 23 under Addition Usage of Premium Services. Now, I didn't understand why I had this until I read that I didn't have Sprint Power Vision Access on my phone. Then, I read tiny little text that said that 3 cents will be charged for each KB downloaded onto my phone. Now, if I'm not mistaken, I downloaded 6247KB worth of data which would add up to to $187.41! I never realized this until now and never knew that you would be charged for how much KB you download onto your phone. The themes already cost about 4 dollars each! Now I want to add the Sprint Power Vision Access add-on package to my phone, but was wondering that if I do that, would the 6247KB diminish since I would have unlimited web usage on my phone? There has to be a way to get around it.
No way can I pay that much money for playing around with my phone for about 2 hours! This can't be happening and when my mom finds out that my bill is this high (It's normally $45), I just hope I'm covered for life-insurance! There has to be a way to get out of it...Your help is greatly appreciated. THANK YOU.