Appalling Service - and I'm not even a tenant!

Had a viewing scheduled with this letting agents, I arrived in plenty of time only to be effectively stood up. Nobody showed (I hung around for 5-10 minutes) - total waste of time. Didn't even receive an email or phone call saying the viewing was no longer going ahead. Contacted the receptionist the day after saying I was unhappy with the experience and din't even have my complaint acknowledged, let alone get an apology. Would give minus stars if that was possible. Rude, unhelpful and down right unprofessional. Avoid.