My Charger's transmission is acting up and I don't know who to trust in Abu Dhab

I've got a 2016 Charger R/T that's been solid for years but lately the shifts have gotten jerky, especially when it's cold, and a couple of times it felt like it slipped going into third. I took it to a general garage near Mussafah and they basically told me to just drive it until it gets worse, which is not the answer I was looking for. I'd rather deal with it now than end up stranded somewhere on the E11. A mate of mine mentioned that American muscle cars need someone who actually knows them, not just any workshop that works on everything, so I've been trying to find a Dodge specialist instead of guessing. I might visit this page for Dodge repair in Abu Dhabi since it came up when I was searching, though I haven't committed to anything yet. Curious if anyone here has had transmission work done on a Charger or Challenger around the city and how it went, because I really don't want to gamble on this one.