Deeper Depression in Tear Trough After the HA Filler is Metabolized

Hi I am a 30 years old asian who had a filler (esthelis basic) injected in my tear trough 2 months ago and that is when the nightmare begins. The doctor explained that the depression (1 week after injection) is due to HA absorbing water and it will take 1 month to see result. He also said the first injection will only last 4-6 months. True enough there is vast improvement after that but it last 1 month and the depression is worse (than before the injection is done)! I am very depressed!