"Phone calls not returned"

Ive recently been diagnosed with adhd and started medication i was meant to be reviewed 4 weeks later but was cancelled due to illness. The next appointment was nearly a month later. Now whilst ive been taken this medication ive had a few side effects which ive been ringing up wishing to speak to someone regarding them and i get told they'll pass message on and get some one to call no one ever calls and sends a text message about something i never asked so ive been getting very frustrated that am passed to Doncaster and no one calls back.