Add data row to datatable at predefined index

I have a datatable with one column:

this.callsTable.Columns.Add("Call", typeof(String));

I then want to add a row to that datatable, but want to give a specific index, the commented number is the desired index:

this.callsTable.Rows.Add("Legs"); //11

Update:

• Must be able to handle inputting hundreds of rows with unique indexes.
• The index must be what is defined by me no matter if there are enough rows in the table or not for the insertat function.