Don't answer the phone or reply to emails.
For well over 6 months in a row, I have had constant problems with getting a regular prescription and doctor's notes. It makes you feel hopeless and have zero confidence in the surgery. If you require these things regularly like me, then it feels like a dice roll as to whether you get them on time or not or at all. I personally am very polite to the staff, even after all the trouble and stress they cause me. But this is beyond a joke now. Please fix it already.