Whatsapp - Broadcast to multiple groups

We need a way to send a single message in Whatsapp to multiple groups (i.e. the same functionality as broadcasting but instead of just sending to different individuals, it must send to multiple groups). This should preferably work for Android, iPhone and an older Nokia. One solution would be to set up a Whatsapp account that just automatically forwards any messages received from certain numbers to multiple groups. We must be able to add new groups. If you are able to do this please email us back with a quote as well a system spec of the approach you plan on taking. Specifications: -------------------- Members of our team will set up multiple normal Whatsapp groups (one per client). They will be sending the same regular updates to each client. The reason these need to be groups is so that if a client replies then the entire team immediately gets that reply. However if a client replies, only out team must get the reply and NOT the other clients. Each member of the team unfortunately is using a different phone (Android, iPhone and Nokia) so the solution must be platform independent. We must be able to easily create new groups and add them to the broadcast. You will be working for developers, so please be technical in describing your bid.