AT&T and having two BGP peers

We are getting an Ethernet DIA circuit from AT&T but they insist that they can't BGP peer with 2 routers on our side. The WAN circuit can only have /30 they say. Has anyone been able to successfully talk them in to bending their rule? If so, how? I know this should have been negotiated before signing a contract but I was unfortunately not in the loop... :( It seems like a ridiculous bureaucratic restriction.