Shelby Cowell is a fantastic colorist and someone I trust with my hair care; this review is not about her specifically. With regard to diPietro Todd - Pac Heights, the appointment booking process is painful and frustrating. Because I can't simply book time online, I have to email back and forth with someone, it takes days (and in my most recent case, weeks) to get something on the books. Besides that, for my first appointment, I was told Shelby had a two times available and was asked to choose one, so I wrote back my choice to confirm. I showed up for the appointment and was told it's not confirmed until I receive an email back again confirming. This is a terrible system. I did let Shelby know and she ended up confirming directly with me instead, and following that appointment, I booked with the receptionist in person at the salon to avoid the whole process. Lastly, I realize that color correction is expensive as are great blonde highlights (which Shelby does phenomenally) however, my total cost for color correction, full head highlight, and tip was $850. That is outrageous. Overall, Shelby is great so I will come see her again, but I have not had a positive experience interacting with diPietro Todd - Pac Heights.