Go into the bank, with the card he used to draw the money out, and simply say, "I want to pay this money into this account" at which point he pushes the card and the money under the grille.
It 'ought' to appear in your account almost immediately (but you might have to check that it does).
I think before stones start being cast and opinions given, it may benefit 'some' contributors to have a read back through lindseys 'financial' questions first...............?