Many thanks to Air-Master. At another service station, they tried to fix the problem with the air suspension for more than 2 months. I thought that was it. I arrived at the Air-Master in 2 days, repairs were made and all my headache was over. They made the same repairs as at another service station, but their work turned out to be of better quality and now my car can drive at high speed without fear of problems with the air suspension. Thank you, I'm really happy with their work.
We did the job, quickly, well. But they messed up a little during the work. We accepted the comments and promised to take them into account in future work.