I've had no difference with Teosyal Redensity II. What should I do?

Hi I have bad black circles under my eyes so I tried TEOSYAL REDENSITY II. The nurse did it slowly and so far I have had 3 sessions, however I have not noticed any difference? Is this normal? I paid so far $750 and that is a lot I don't want to keep on paying. What should I do?

No doctor answers yet