Hi in 2017 I had breast cancer I lost my left breast and coped relatively well with that and all my treatment... 5 weeks ago I had a biopsy done of my left eye orbit and was told 2 weeks later that I have metastic breast cancer... (Seems weird saying to people I have breast cancer in my eye) I'm yet to find out what treatment I have to have or when it starts... I called oncology department and explained the situation and asked what was going on as I'm worried this horrid cancer will start to affect my optic nerve and possibly lose my sight only to be told the woman doing appointments was on holiday for a fortnight and she will be in touch when she gets back.... How can they do this... I mean not have anyone to fill her shoes while she was on holiday... I'm in turmoil I don't know what's going on I'm stressing more now than I did the first time round I just feel no one cares....
This is awful! Have you tried your GP and asked them to contact oncologist? You could also try the PALS dept at the hospital who act as patient advocates. Waiting is one of the most difficult parts 
our disease, but not for someone to finish their holidays
