"A & E Senior staff rude"

My mother was treated in A & E and eventually went on to EAU. All the frontline staff were amazing in their care at a difficult. When I rang to speak to anyone more senior, I was initially past onto a pleasant doctor. During this brief conversation I expressed my concern at how long my vulnerable mother had been waiting. The phone went quiet and a 'senior' person spoke to me in a rude unhelpful way. I was shocked and upset by his brusqueness and mannerI apologised for 'wasting' his colleagues time. All he wihed to rant on about was how busy he/A & E were. I am completely dissatisfied with his approach and aggressive behaviour. When I am able to I will be taking this matter further.