"Change of appointments was not as expected"

Unfortunately the clinic I need to attend has changed their day, I assume this was for a very valid reason. However the new day (Friday) is almost impossible for me. I did say that when they told me of the change. Sadly because of this i have kept having to cancel/re-book my appointments as my job is quite inflexible and I have a sick/disabled mum to cater for as well as my young child (getting someone to take care of them if I am not around).

Recently I had to change my appointment as my work required that I be in. When I called to rearrange the appointment I was told by appointments lady that, as I have had to keep changing, there was an issue. She DID change it though, but made me feel quite bad/uncomfortable about the whole thing.

She suggested that I use 'annual leave' so I could come to the appointment. i thought this was quite rude, I didn't say anything at the time as I was quite taken back by the suggestion. I did call ahead of the appointment, as soon as I was able. I don't get that much annual leave and prefer to take it with my family. Feeling uncomfortable about going now.