Best Dpf Filter in Phoenix AZ

I asked them to clean only my DPF filter and I told them over and over. Also told them that I have a repair shop, the only reason I asked them to clean my filter because my driver was paranoid ( Volvo has a gauge for DPF soot level and the driver seen it on the gauge). The truck was running fine and had no fault codes. Truck was coming back to California from Arizona. They cleaned my DPF filter, performed regan and reset ash on my truck ( Volvo D13). Charged me $1500.00. I do understand that you have to change the gaskets and clamps which was ok. I think I shouldn’t have got charged for the regan and ash reset. They never told me that they were doing that. They told me after they did it. They got me once but I wouldn’t let it happen again.We have a filter cleaning machine in our shop and the programs. I would never go back.