Shield Express Mall at Reds - breaking parts on vehicles!

I took my daughter's new Mini Cooper in for a wash, only to find the antenna missing. We finally found it in the washing bay driven over by other vehicles! The manager said to bring him a quote, and they will fix it. Did all that, got the best price (R570) only to hear that all vehicles are there on own risk and we can get 4.5 washes for free! I am loosing out big time because they will NEVER see me again! For what? To break something else and just hand out free washes? No thanks