Clients in paying tax

I am sharing my experience.

Recently a new trend has begun , I told to clients that you have a tax liability in your recent IncomeTax Returns as you have of business income , than after discuss the clients agreed to pay the tax.

Than after some a days I called them to pay the taxes to finalize the ITR
...than after they didn't respond us & telling lies & finally they block our numbers.

This is illegal money they don't want to show in their ITR & don't want to pay the taxes.All the incomes of client is increasing the value of above 50 lakhs to 2 Crores as in Benami Property.

I shocked that how peoples are telling lies to the Chartered Accountants , Tax Professionals.