Pelange, yes, all the doctors in Brazil want to use WhatsApp. Very few, if any, returned voicemails left via cell phone. That was my personal experience not only with Dr. Pittella but with other prospective clinics as well. In addition to being free, WhatsApp offers a very good language translation service that I know was very helpful in my case (I speak some Portuguese but I was communicating in English with the doctor's staff).
As far as scheduling the procedure, I believe it was a pretty fortunate set of circumstances. First, I was in Brazil for 3 weeks. Being in Rio means I was close to Vitoria where the clinic is located. Second, I had decided to go through with the FUE procedure, and I had decided that Dr. Pittella was a great choice. Third, my wife is Brazilian and my kids speak Portuguese. Dr Pittella manages a small clinic, and this Brazilian connection could have played some role, but it is hard to say. It was definitely somewhat of a scramble to mobilize and get the lab work done a week before, schedule the short flight and hotel, etc. But it was all worth it in the end. I received great care by a great surgeon and supporting team. They have monitored my progress daily for the past 24 days since the surgery (all via WhatsApp to which I post videos) along with periodic video consultations. In addition to all of this, Dr. Pittella is a good-natured and caring person.
Melvin, I'd be happy to write a review when time permits.