"Wisdom tooth extraction"

I had a wisdom tooth taken out in march 28th 2014. Was told it was straight forward. since then I have had an infection, been on 3 lots of antibiotics and had lots of small bones and chips of teeth come out the hole. The hole is now connected to my sinus and I have got to go back to the dentist today because a sharp piece of bone/tooth is sticking out the hole. I am awaiting corrective surgery as the hole is connected to my sinus and need to be repaired. Its truly shocking that this is happening and how I was told that it was not complicated extraction but clearly was. I am utterly disappointed in the service I have received. I would not have wished this on my worst enemy.