Australian laser clinics

I went to my first laser appointment last week for underarms. I've never had laser before so the technician was explaining everything to me. She said the hair will fall out over the next couple of days or straight away if I scrub it off. However nothing happened? Its been 5 days now and I obviously shaved the day before and she said the hair growth will START growing after 4 days. DO you think she might've not done it properly? Because there were literally 2-3 beeps per arm. I'm really confused I didn't expect this from such a big company