Lack of knowledge or skill?

Went in for a simple Tyre rotation and wheel alignment check at Hi Q Kya Sands, have been back 3 times and the car is worse than it was before they started. They also smeared my door and door handle full of black grease. One of the staff were working on a truck in the car park, Its more like a backyard mechanic type of operation than a professional tyre Centre. Stay away!!! After taking my car to another tyre dealer on Saturday My wheel alignment is now perfect, The wheel alignment was so badly set that I would have damaged my tyres if I had continued driving the car, also the tyre pressures that Hi Q "checked" were different on all 4 wheels. Either badly calibrated equipment and/or staff that are either not trained or just don't care!