The one who, when I phoned to get her to re-fax my hospital referral letter as it hadn't been received by the hospital, snapped at me "we can't follow up every referral fax to see if it's been sent, you know." Eh, I didn't say you could... although, actually, why can't you? Do you need 50p for the paper for the "fax successfully sent" message or what?
The one at the early pregnancy clinic whose care I was supposed to be under, who refused to book me in for an appointment or let me speak to a nurse when I phoned up to tell them that I'd just had a private scan and the baby had died.
The one who, when I asked how long my request for my medical records would take to process, told me "well our KPI is 35 days". Thanks I don't work for the Care Quality Commission, I'm a patient, how about you tell me in English?
The one who wouldn't book me an appointment in a downstairs consulting room ("you're not disabled, are you?") when I brought my twins in for their 6 week checkup, and then wouldn't carry one of them up the narrow stairs for me (I ended up putting them top-to-tail in one carricot and carrying that up, luckily I hadn't had a C section)
Then we moved to Germany. They also have scary GP receptionists but they tend to be scarily efficient as well, which helps.