Take the following:

You go into SubWay, you get a meal deal, you get a voucher for a free drink, or sub, or whatever. You go to any other SubWay and you can order your free item and present the voucher. No dramas

Now, try to port this over to the banking industry. You have a cheque you receive from your employer. You to a branch of the bank in question. they wont cash it.

WHAT THE FUCK PEOPLE! ITS THE SAME FUCKING BANK BUT A DIFFERENT BRANCH! ARE THEY UNABLE TO COMMUNICATE INTERNALLY??????