I called to speak to my doctor and she wasn't available so they arranged a call back from the locum
My GP surgery does that too when you phone up and need to speak to someone that day.
Actually, thinking about it I rarely speak to my own doctor now.
Usually I don't mind as if I need to speak to them that day it is about something like an ear infection or whatever.
Do you know if your GP is still off on long term sick??
Could you check your GP surgery's website to see if it says anything about your GP being off sick??
If your GP is still off you need to see someone else but you can make a choice about who is best for you.
When you are on the website, look at the list of GPs on there and see if there are any GPs who you have met before and like or failing that, see if any of the GPs have a specialism in mental health.
Then, I would call the surgery before you get to a point where you need help right now and say that you want to make an appointment with your GP (if she is back) or the GP you would prefer.
If they say that a locum will call you back say "I really need to see [this GP name] face to face as I have a personal medical issue and she knows the history of this issue which will save a lot of the surgery's time"
Let us know how it goes.