GUitar's.....

so...I will be starting the guitar class next sunday ...so excited..cant wait...but there is one problem before i will learn guitar.....i got a acoustic guitar..but i register for classical guitar lessons ..and i have no classical guitar ....so....i tot can buy but... my dad say the acoutic guitar and learn for the classical guitar lessons...but i read the guitar book.. and it says "acoustic guitar's cannot be use on classical guitar lessons" haih...and now im convincing my parents to buy the classical guitar so i can learn the basics for guitar....but .. still...im very upset.. i just want a classical guitar wat's so hard about that.... just take out atleast 1000 then choose a classical guitar then pay and one more take it back home...haih ....very..dissapointed