Question on shipping

I have yet to play any Dice Throne but have been intrigued by it for some time now. So I decided to order a few of their products directly from their store. I put the order in on March 6th and received confirmation of the order the following day. The receipt said to expect ten to twenty days for shipping. It is now the 26th and I have yet to hear anything else from them.

I had sent an email five days ago just asking for shipping clarification and did not get a response. Then I left a message via phone today on the 26th with no response. Is this normal for them? I just want to make sure that I will receive the purchased products and that I didn't some how slip through the cracks.