I routinely go to this salon and have never had issues!
However, last time I booked a treatment my appointment was rescheduled twice. Mildly annoying but I understand issues happen and didn't make a fuss of it.
When I eventually got to the salon, the beautician (whom I'd never had before) was in a rush to get to job done as quickly as possible, which made me feel very uncomfortable - e.g. rushing into the room when I wasn't yet ready without knocking on the door, going through the treatment very quickly in a rough (and at times painful) manner - it was really not nice.
I usually get very good customer service - not sure what happened this time round.