Mechanic recommendations?

Hi Neighbors! Took my 2016 Volkswagen Jetta in for inspection today at Midas and it failed due to needing a carbon cleanout. Midas does not offer this service and when I called the dealership their price was triple what I saw online. I am wondering if anyone has mechanic recommendations and/or has experience with this issue and can share from your experience. Appreciate any insights you can offer! Heidi Weaver