We were double booked, with the same nail technician. This is a Treatwell issue, not the salon. However, we were both bleeding (3 of my nails, and 4 of the person with me) when she 'cleaned' our nails. I had to give plasters to the person with me, there was that much blood. 1.5 weeks later and our fingers are still sore.
Probably the worst nail experience we both have had.