I was scammed on my first PC :/

I bought a PC off someone from marketplace today. I am not the most well knowledged person on this, but I've been researching for the last 3 months to make sure I got something good enough for my university program and requirements.. found a listing for a Pc with an i7 11gen, RTX 3070, and 64gb of ram for $700. I was also saving up SO like figured this was maybe a good deal.

I meet up with the guy.. I guess I maybe didn't ask enough questions or didn't see the PC thoroughly, I also met him in a public place since I didn't feel safe meeting somewhere else. Then I get home and the PC is so different than the one I was told I was buying :/ There is a rtx 2060 instead, only one 8gb stick of RAM, and only 1/3 of the storage it said it would have.. the PC fans light up but dont even spin and I haven't been able to get any video out in my monitor yet..

Kinda at a loss since I dont know what to do to fix i.. currently on the floor crying because i feel like I got ripped off plus have no more money to actually get the PC to the specs I need it at.. haven't checked the CPU or the other specs yet either so i dont really know what to do.. the seller immediately blocked me as well.

if anyone has any recommended next steps please let me know. Thank you :)