How i could Write this in hungarian?

If your original sentence was planned to be "Sorry i couldn't reply your call this morning because i've been sleeping since yesterday night and i couldn't hear the telephone"

In hungarian it would be something like:

Elnézést, hogy nem tudtam felvenni a telefont ma reggel. Éppen aludtam és nem hallottam, hogy csörgött a telefon. Gratulálok a testvérednek!

I hope it's the right thing you wanted to be translated :) It's quite nice to write someone on his/her own language as a non native speaker! :)