I had a similar issue when registering with my GP.
During the onboarding session we discussed my many ailments and the nurse typed them into the EMIS, the patient management system.
She then asked me about my asthma as she could see I had a prescription inhaler from the notes. I told her I don't have asthma. I also asked how there could be notes on there if I was on boarding to which she replied that she had been updating my medical record. So I asked what the address was one the system.
AND IT WASNT ME!
I had the same problem at the nearest pharmacy to my home where they kept giving my prescriptions to the other me. I'm sure that his ventolin went down well with my hormone gel, citalopram, metformin, ramipril and amitriptyline. They soon sorted it out when I stood in their pharmacy asking them to describe the other me. Him being black and in his 20's with dreadlocks was not easily confused with me - a pastie white colour knocking 50 and thinning locks.
So now I'm doubly vigilant because who's to say his details haven't overtyped mine in some system somewhere.
What happened to those people that we all thought were the benchmark for 'normal' - you know, washed regularly, held down a job, managed a bank account, could cook dinner without cutting their own hands off. How did they get replaced by people lacking basic maths, probably basic spelling and with nothing engaged between eyes and fingers?