A couple things that people need to consider about the support role.
First off, don't play ranked if you haven't practiced support. It is probably the only role that you will be forced to play. So, if you are going to be forced to play it, at least be intelligent enough to learn it.
Second, if you are banning, ask your support if they mind if you ban a certain support. If you are going to force a player to support, then at least be intelligent enough to ask them before you ban their main support champ.
Thanks.