"Very disappointed"

My nan was brought in to A&E as she was dizzy and having chest pain this was at 4pm on the 02/01/2018,

She didn’t see a doctor until 10pm he said he was checking her bloods if they where ok she could go home 20mins later he came and said she would be staying in and need IB infusion of antibiotics,

45mins later a nurse came in and gave her 2 antibiotic pills put her on a nebuliser, put a canulaer in her arm and pumped about 50mils of some antibiotics in her,

We where still in the same department at 12am waiting for a bed as she was being kept in for antibiotics infusion we where not told why she needed the IV infusion of antibiotics, we have been told she will be in for a couple of days.