Firstcry.com — wrong billing pattern

Address:

Ghaziabad, Uttar Pradesh, 201001

I purchase one soft toy from first cry Ambedkar road Ghaziabad store of Mrp 799 inclusive all taxes in which they offers 25% discount on Mrp I.e., 199.75 so the value is rs 599.25 & after that they added tax on that value I.e., 12% & the bill amount was rs 671.16.

Firstly how I get a discount of rs 199.75 ?
Secondaly how you can add tax when you give the discount on Mrp?

Regards

Nikhil garg
[protected]