Brand New Dell creating multiple problems!

I recently got a brand new Dell laptop. Within a couple of months - it started giving problems while starting. Every time I sat for an important meeting it failed to start. I had to have a back up laptop everytime. The dell team claimed to fix this but this problem still arises. Then yesterday- the speakers of my laptop crashed. And stopped working. They now need to replace the speakers. Inspite of multiple requests to replace the laptop as it is only a few months old - DELL refused to do so. What is the point in selling such rubbish pieces and not even agreeing to replace them! Never ever buying dell products ever again!