The wake-up call did not ring.
SVE-glia — two syllables, stress on the first. 'gli' is a palatal sound.
Report this if you requested a wake-up call that did not come, especially if it caused you to miss something. Document the failure.
'La sveglia telefonica' = the telephone wake-up call. 'Non ha suonato' = did not ring — passato prossimo of 'suonare'. 'Sveglia' (alarm/wake-up) comes from 'svegliarsi' (to wake up). This is a serious service failure that can have real consequences.
Avevo prenotato una sveglia alle sei.
I had booked a wake-up call for six.
Specify the time and the fact that it was confirmed
Ho perso il mio volo per colpa della sveglia mancata.
I missed my flight because of the missed wake-up call.
Document this clearly — it may support a compensation claim
Chi posso contattare per il rimborso?
Who can I contact for a refund?
Escalate to the hotel manager if the failure caused real losses
Wake-up calls ('sveglie telefoniche') are logged by Italian hotel systems. If the system shows a call was placed but your phone did not ring, the problem may be with the line connection in your room. Always set a backup alarm on your phone for critical departures.