I had a brake job done here

I had a brake job done here
The front end vibrates so much

I make an appointment with the online system

They call on the day of the appointment they can't get me in. They double booked appointments I miss a day of work

I go to Belle Tire they say the r/f caliper is locked up
I make another appointment the
Representative John Grima is so rude they are too busy
Why do they make appointments they do not keep them