Smashing Commerce — ghatiya maal hai

Address: Jabalpur, Madhya Pradesh, 482002

Hi,
I have received a product 'pest repellent' from 'smashing commerce' through facebook advertisement. It is a useless product with lot of noise. I just want to return it but couldn't because of no response from their team. Even i am trying to contact them via call but no one responding. Many times i drop mail to them but they just answering the mail with use it for few days.
I don't want to use it for single day.
They charged me 480 rupees. It costed around 20 rs. For the received product. They mentioned had a money back guarantee within weeks but now not responding on calls.