Power steering pipe hitting bulkhead

Has anyone ever heard of this? Got Antara with 10miles on the clock, all fine till 1500, when a heavy vibration and knocking sound could be felt through the steering wheel and pedals. Garage confirmed there was an issue and that the power steering pipe was hitting against the bulkhead, they secured it and all well. Within 10 days the knocking is back, just concerned what damage could be being done? Back to garage tomorrow. Keep you posted.
Lall