Sovcit isn't having luck with the coupon method.

Lol, amateur. Clearly you aren’t using the right coupons.

You have to order them to do it first. Something as simple as "put the money in the bag or else" on a note handed to a bank teller should do the trick, I've seen that work in educational documentaries on the television. The "else" here is putting a lien on their corporate strawman but you don't want to tip your hand too early by spelling it out.