Embryo freeze procedure and cost.

In the month of December 2017 we went to a well known IVF centre in Hyderabad. my wife's body produced 17 eggs on pickup. out of 17 eggs 8 are fertile one, on 3rd day our gynecologist asked us to come for FET for 2 embryos implanted in the body. and we done with it and full medication as priscription due to un known reason pregnancy not come in serum beta test. and the hospital asked Don't worry still you hvae 6 good embryos in the Hospital Freezing Department Atter they adviced us to go for hystroscopy and Biopsy of the uterus. later on in the month of march 2018 they perform 2nd FET till now we have spent a large amount in this IVF treatment. but the thing is in the 2nd FET Discharge summary they mentioned 0 embryos stored in the hospital. Please Doctor guides us rightinfo About IVF and embryo freezing. thanks