Amazon India — Unethical behaviour

Address:

Chennai, Tamil Nadu

I have ordered fitness gloves on 18th June.(Order #[protected]. At the time of order the delivery date shown as within 23-29 they wi deliver. But, they have changed the delivery date without intimating me to 30june-8july. I have contacted the customer care reg. this and force them to deliver ASAP on 1st of July. But after 15days(3rd july) they simply cancelled the order (they initiated the refund) and ask me to purchase again. I want to file a complaint on them to make me wait these much days and cancelled the order eventually. I want to take action against them for put me in depression. They should not do it again to any of the customers. I have all the evidence with me as a mail proof. I dont know how to escalate it to further. Please assist me on this.