Encouraging customers to apply for a credit card

Q: I work in a department store, and as part of the job we are obliged to encourage customers to get a store card, which is a credit card, and if they do, to open accounts for them. I too have to sign their contracts which states they must pay interest if they miss or fail to make their payment on time. What is the ruling on credit cards, and is this work permissible?

Mince pies containing brandy

Q: I bought a pack of mince pies today, which unfortunately contain brandy; however not sure what percentage it contains. To the best of my knowledge, the rest of the ingredients are halaal. I bought the same pack once before, and noticed the ingredients mentioned brandy, but decided to throw them away as to be on the safe side. Now, not sure that was the appropriate action to have taken. I bought the same packet, this time round forgetting about the brandy issue associated with it! My question is; what should I do with this packet of 6 mince pies? Should I throw them away? Give them away? Eat them? How do I go about this problem brother? Thanking you for your time and efforts.