I received the wrong part - how do I get this corrected?

I placed an order for a Single Lead Heart Rate Monitor, SEN-12650

However, SparkFun sent me a sound detector, SEN-12642

The Packing list shows that it should have been what I ordered, SEN-12650.

I had ordered this on 2-day shipping.

How do I get this order corrected? I sent an email to support, but there has been no response?

Hi Joseph.

Very sorry about that! Our customer service team does have your email and will respond as quickly as possible. I’ve given them a heads up, hopefully they will be able to respond before the day is over today.