How can I get a repeat prescription without the GP?

I switched GP surgeries two+ weeks ago, because the old one was difficult to get a face-to-face appointment at and their phone didn't work properly during some appointments (ie total silence). When I switched my prescriptions were removed from the NHS app, so I can't request them any more. After submitting a repeat prescription request on the new GP surgery's website, I didn't hear back, so I submitted another after a week, but I haven't heard back. My medications (which I've had for over a year, for a condition I've had for 15+ years) were prescribed by a specialist, not by the GP, yet it's the GP now gatekeeping it. Without the medication I now have pain and have re-developed a chronic cough, and more difficulty eating. It's pissing me off that we have to bend over backwards to show respect and be uncritical to people who have no respect themselves, either for their job or for patients. Any other line of work or life employees wouldn't feel so entitled to respect when not giving it or when not performing responsibilities. I've pulled my weight to get referred, get a prescription and use the app, but they're not pulling their weight.