Indo Shop — Regarding refund of my indo shop package.

Icici bank credit card offer regarding i have received a call in which they elaborate this package of indo shop that avail on my credit card and i can cancel that at any time and send me a parcel on my permanent address but now i don want this anymore as my personal issues so please understand me and refund me. He told me about holiday package voucher 2 (18 months ) .At that time they said that i will cancel my order any time because it's a RBI govern company. So i bought that Voucher At this time i want to cancel my order but they are not cancelling my order And they are scolding me and saying they will not cancel my order what ever i want to do i can do. Now they are talking me rudely . They are not cancelling my order i want to cancel my order . Please do needful for cancelling my order and tell them refund my amount.