"GP can't/won't renew prescription"

I have called and visited multiple times to request my prescription to treat my mental illness to be renewed and still am yet to receive anything. I was told that my flatmate could request a renewal while I was away on vacation - this was false and her attempts were in vain. I went yesterday, right after I got back, to request a renewal - was told an urgent prescription will be sent to my nominated pharmacy. I called my pharmacy today and they hadn't received anything. I called the GP again today, who said the same thing as yesterday, and told me she'd call me to update me by the end of the day - the GP closes in 40 mins and I haven't heard back. I don't know why it's so difficult to get my prescription when I've never had this issue with my previous GP before I moved. I'm at my wits end.