Sendmygift.com — Order no #[protected] not delivered (order date was 8th feb 2016)

Placed order on 8th Feb 2016 but it is not delivered yet.
I have contacted several time to the customer care through chat and phone call and they said every time that they cancel my order and will refund my money back.
I have also send email to them to refund my money.
After seeing lots of complaints, I am sure that it is a fraud company.
How to file complain in consumer forum ? Please tell me procedure to complain in consumer forum