Tooth removel

[Betty brown]

Hi I had a tooth removed last month however my dentist left my root in I am having this out next month,? when my tooth was removed my dentist was tugging for ,5mins the next day I was black and blue and my lip was slightly cut and bruised I have since developed a abcess on my top gums the tooth removed was on bottom gums my dentist days I have to pay bill for treatment on this but I belive he is responsible for causing the damage any advise