American rockers We Are Scientists have slammed producer/singer Pharrell Williams, after they failed to return his phone calls. Both artists shared the bill this month (JUL06) at the Oxegen and T In The Park festivals in Ireland and Scotland respectively. Frontman Keith Murray say, "We have a beef with Pharrell. He never returns our calls. "We send him emails and he never hits us back. "What's up Pharrell? Your beats are whack. But in a good way. Please just return our calls."