If you don't remember the pin you must wait for the seven days to expire and then talk to the banker about a pin. You will then have two options. You can set a pin up (Don't do this yet) or you may change the delay(do this). You should change the delay to three days and then create a new pin. If you stole/scammed the account off someone and they set a pin and now you want it off, well then fuck off. Most likely you just forgot it though so just wait it out a couple days.
Basically if you didn't have the pin already set up then you can set the delay for 3 days to recover. If you are pending the pin recovery and didn't set it up the delay for 3 days, then it's going to take 7 days as a default.