Credit Card

I have applied to CANADA PR Visa and for that I have given my ICICI bank credit card details to CANADA Embassy and I have also taken prior approval from ICICI Bank Customer care before giving details of my credit card. I have already mention to customer care officer that this is very important transaction pls confirm if there will be any problem in doing this transaction. At that time they told no issue go ahead this transaction will approve be approved without any problem. After 3 months when actually Canada embassy tried to swipe this card the transaction got declined. They tried 4 times till 4 day but each time ICICI bank rejected and I contacted so many officers of ICICI bank but no one was agreed to approve this transaction and even they told that as this is the new card this transaction will not be accepted. I requested them many times and even I told that I am taking the responsibility of this transaction, I have taken prior approval and so on but no one was ready to hear my situation . Now just because of this wrong information provided by ICICI customer care I lost everything and I got my application back. It was life time opportunity but now nothing can be done. I have invested so much money to prepare for this.