Hi again,
The array formulae I provided you with will work for sure. However if you do not fancy usung array formulae you can make a kind of workaround where standard VLookup or index match functions will work too. What you need to do is to as two columns:
1. Add column c and place there the following forlmulae =A2&B2
Fill in the formulae down the range
2. Add a column between customer and country code (F and G) and place there a formulae concatenating values in column F and G =F2&G2
Once you did it use either vlookuo or match function based on values in added columns