Delta airlines Bitten by brown recluse during flight Atlanta, Georgia

Good evening,  

My kids and I were traveling from Atlanta to Johannesburg SA Monday jan 9th -jan10th when about half way through the flight I felt a sting.  I went to the restroom and noticed a red mark on my left inner thigh.  I told the flight attendant and was told it was probably a mosquito and I thought it could have been.  Around 11 pm that night I noticed my leg really started to hurt more and more and red mark was getting larger.  I went to the embassy medical unit the next day however they were already closed so I went the next morning (Thursday) I was told it was a bite from a highly poisonous spider or something else.  I had to return the next day and they cut it open to allow the infection to drain.  I was under their care until Wednesday 18th when I was sent to a surgeon who admitted me to hospital and operated the next day.  I was released on Friday 20th I was seen by the dr again on Saturday an Sunday and on Monday (today) I had the bandages taken off and I saw for the first time the massive hole that was cut in my leg and which went at least 3.5 in deep.  The dr said it looked like a brown recluse.  I have surgery again on Thursday 26th and the will remove more tissue and try and staple my leg with a drain tube inside.  I contacted delta 3 times and have yet to have someone from corporate office to even say "sorry".  I wanted to know how often they spray that plane and to how me the records.  It could have been my small child and it could have  been fatal.