Poor service re faulty shocks

poor service from Kingsmead Toyota Reported high spots on tyres at second service was told shocks are good. Reported high spots again to Toyota Again claims shocks are good, must replace tyres . Took car to HiQ. Tested shocks. Rear shocks need replacing. These shocks causing high spots on tyres . Kingsmead Toyota claim they only replace shocks if shocks are leaking.