Netlify DNS issue! HELP

I recently finished developing my portfolio using Angular8, and then yesterday i did register for a domain with netlify which costed about $16.99
after registration it did gave me those option to setup the A , CNAME, AAA records but i was still busy with some functionality of my portfolio. So i'd just brushed it off that i will do all that set up once i am done fixing the error on the IDE. So now i've deployed my site, the site is live but got an error when i clicked on its link' error : "Page not found, Looks like you've followed a broken link or entered a URL that doesn't exist on this site. " '

I have reached to out to support, its been almost 5 hours without any response