"Wrong treatment"

I was given the wrong treatment on several occasions for a facial skin problem (wart) which I ended up paying a private clinic to deal with. But the passage of time has allowed the wart to spread; I now feel disfigured and embarrassed. My first consultation about the wart the GP didn't even look and said it was Impetigo, prescribing an antibiotic which was pointless. I used that needlessly for two months. Then I was prescribed salicylic acid which you aren't meant to (can't really) use on the face. Another time I waited at the clinic and we were all sent away because the GP didn't turn up.