Issue with Ocean.io Leads Import Consuming Excess Credits

One more thing, I was adding leads to a table from Ocean.io. I only import 100 leads and it took 300 credits. Can you please let me know what's going on. Here is the link of the table: https://app.clay.com/workspaces/324815/tables/t_g55Nf63bCBjK/views/gv_aTx5UW7wehEv