Work issues

So I work as a care assistant just attending elderly and vulnerable adults in local community. Anyway I contacted my boss the other day and I said I'm allergic to cats so dont send me to these people with cats, anyway nothing has been done. Instead they are sending me daily to people with cats and other Christmas about 3 hours per day I'm going to be round cats. I've told her that it gives me migraines and my eyes itch and burn same as my skin but nothing is getting done so im going to be feeling poorly daily.

Same as today I told them make me unavailable at tea time as I'm not here. I told them a week advance and nothing been done about that.

It's a bloody joke.