From Wiktionary, the free dictionary
skella á
- to hang up [with accusative]
- Synonym: leggja á
Hún skellti á mig!- She hung up on me!
Af hverju skelltirðu á mig?- Why did you hang up on me?
Ég ætla að skella á þig!- I'm going to hang up on you!
Hún skellti á pabba minn þegar hann sagðist koma klukkan sjö.- She hung up on my dad when he said he'd arrive at seven o'clock.
- The verb skella á has a harsher and more of a negative connotation (akin to slamming the phone down) than the verb leggja á which has a softer meaning (akin to laying the phone down).
