"Nerve damage"

I've been to A&E a few days ago because I was feeling unwell. The nurse that took my blood sample pinched my nerve in my wrist twice and also left the needle in in case I needed additional treatment. I was in pain for 5 hours because of that and even now my hand is in constant pain and I can't feel my thumb and index finger anymore. When I complained about the pain I was treated like a very fussy annoying patient. Thank you very much I just hope the damage in my hand is not permanent.