Tata Cliq — amount deducted more than order but yet not received back after cancelling the order.

Address:	New Delhi, Delhi
Website:	Tata Cliq

I have order a sling bag from tata cliq app after that the amount i have to give is rs.248 but they have deducted 448 from my bank account when i do complaint of this then they told me that i will get refund within 2-3 days but now it 10 days above but yet not recieved amount. Now when i am calling them then also they say wait for 2-3 days their answer is always 2-3 days and they do not work on it at all.

The worst service ever i have recieved from any online shooping app.
If they cannot do any thing then tell me the refund cannot be done then i will prefer another action.