It doesn't hurt to ask, although seems like Chase doesn't like to work with you much. Also it seems local branch management doesn't have much discretion. That being said I've worked at a top 5 bank (not Chase unfortunately for this), a midsize and now a family owned community bank. At each I was able to offer some sort of incentive to customers looking to leave if it made good business sense (such as new deposits). Is the $500 just for the savings account? Here (Chicago) it is $300 for checking and $200 for savings with $15k. Either way I would ask if they would make an exception and allow you to do that on an existing account first. This will also depend on what the goals look like at Chase...if its just new units and not balances the manager may not care. Same goes for P & L, $50k may not offset their hit with offering the promo. Banks use these promos to get you in the door at a loss (obviously) hoping to cross sell you other services like a CC, mortgage, investments, etc. Or hope to make it up with fees, but someone who can keep large balances in a savings isn't going to overdraft or pay other common money making fees. If they already have you and have tried (and Chase I'm guessing can look at each customers current profitability) to x-sell those services again may not be worth it to them.
This is why I'm happy the bank I work for gives the promo to new and existing customers...don't have to feel bad telling the longtime customers no....
