Uh, I don't think anyone will do that. I suggest you hire a professional security team and let them do it with your written permit. I don't recommend posting here and asking people to "hack" it. Once they do, it will most likely be used for illicit data and who knows what will happen to you and/or your company.
How interesting, a major bank just decides it wants its website hacked and posts all over a public forum! Do you take us for fools? Because we certainly take you for one..
If I find this rubbish on *any* other board on the 'Net I will personally contact the relevant authorities at the bank and provide them with your ip address:
and your ISP's abuse contacts at NTL, Great Britain
Next time you try to pull this sort of stunt, I'll happily post your email address, real name, address, telephone number and credit history for the last 5 years over here and ask people to 'hack that'. Or maybe just 'delete it' since you have backups...
Bear in mind, the Internet is the new Wild West, and there are lots of people who play sheriff to stop things like this happening.. once you understand that fact, you will reconsider your post.
So consider yourself warned, or being banned from this site will be the least of your worries.