Credit card interest

I applied for an MBNA balance transfer credit card.

On the application, I added both credit cards I wanted to transfer.

I wanted a limit of $9,000 ($7,000 card and a $2,000 card)

Instead, I got automatically approved for $2,000. It never asked me to confirm if I was okay with only $2,000.

Having knowing this, I wouldn't have applied.

If I were to cancel, would this impact my credit score since I'm cancelling before activating? I called and they recommended for me to wait until I get the card and apply for a limit increase.

Any advice? Really appreciate it.