"Shocking"

My grandmother was taken to hospital last year with breathing problems. She was given a nebulizer and made to wait in A&E for 5-6 hrs with no-one coming to check on her until we went and asked. Finally, she was taken for an xray, and told that there was a suspected 'clot on her lung'. She was then admitted to a ward (AMU). Later that evening we received a call to say she had suffered a heart attack. She was moved to CCU, where they couldn't control her blood pressure, before being transferred to ITU. She grew progressively worse over the next few days. Doctors gave us varying diagnosis, ranging from sepsis to a heart valve problem. At one point, we were told that there was a problem with a valve in her heart, only to be phoned up that afternoon and informed that we were given the results for a different patient and it was not the valve. They still didn't know what was wrong with my grandmother. By this point, she had developed an infection. She seemed to suffer from what we were told were 'episodes' during the night, and we would come in each day to find her worse than when we left her. No-one even tried to give us an explanation of what there episodes were or what was causing them. Then one day, we rang in the evening to find how she was, only to be told that she was being moved to CCU. She'd been showing improvement for a few days. We went to visit on the Monday and to our great shock found her comatose. We were told then that she was 'very ill', with water filling her lungs and that we could come and see her at any time. Basically, I think they were saying that there was no hope. She continued to deteriorate throughout the next day, My mother and grandfather were called in in the morning. They were then told that 'They didn't know why she'd been transferred to CCU, as it wasn't her heart, but her brain (hypoxia)'.She died that evening. I've never seen a hospital where there was so little concern with regards to talking to families, such ill communication between departments, and frankly such shoddy care for a patient,