Another thing, if you are near any of the apple store, don't bother with trying to make an appointment, just go there, ideally at a quieter time, i.e early morning or early evening, and said you need the machine fixed urgently.
SW9 shall I go central for an apple store or check a local authorised repair center?
Yeah, echoing the above advice; take it to an Apple shop, early in the morning.
@frankohara started
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Another thing, if you are near any of the apple store, don't bother with trying to make an appointment, just go there, ideally at a quieter time, i.e early morning or early evening, and said you need the machine fixed urgently.