Claim of credit note issued by Investors clinic and misused what to do

I had bought property through investors clinic and was issued a credit note which states that post 60% payment to builder payment would be done . I had made all timely payments to the builder and 60% was done in year 2015 . Since then I have being sending mails to investors clinic to make the payment however every time they are giving different types of excuses. They have even ducted TDS in FY 2016 & 2017 . Please guide me what action can be taken against them for recovery of the credit note and mental harassment that I have been enduring since last 2 years during followup