"Rude and unhelpful receptionist"

I went to collect some hearing aid batteries on Fri 27 October. There were 2 receptionists both using computers. I was ignored for quite some time until finally one receptionist glared at me and in a very rude way said Yes? No smile, or good morning or can I help. I explained I wanted batteries. She asked the size. I explained they were new hearing aids and I couldn't remember the ref. no. and didn't have an empty packet with me . She said she couldn't give me any without knowing the size. I stood there and she grabbed a large box full of packs of batteries and held it out for me as if to say See?. I said: Could you open a box please and show me the batteries because I will recognise them from the packaging. Reluctantly she opened one box. They were not the right batteries. She opened another one and I said that is the correct battery. She asked how many hearing aids I had. I said 2 and she gave me three packets. I thanked her and she just glared at me without speaking and continued to glare until I turned away and left. This woman was gratuitously rude and unhelpful and if I had been in any way vulnerable I am certain I would have left without being supplied with batteries since it was only my request for her to open the boxes that resulted in me being given any. Both receptionists need some customer training at the very least and should be made aware of the impact they have on people coming to them with legitimate requests.