VLOOKUP Not Working Properly

Hi there,

I can't figure out why my vlookup function isn't working as it should.

I have a spreadsheet of data with a search function in it. I've attached an example workbook to this post. Everything works except for the vlookup function in columns K through to T.

The workbook is a reference to locate different departments with my company and the mail trays their mail is to go to which is designated by a lettering system.

When i search for department "4", all the columns from A to K work properly, a few have the vlookup function and are working correctly but for some reason the last part is not working for the contact persons of the mail trays. The function is looking up the cell in column H and should be checking that with column K and then returning the name in Column L, but it's not doing this, its randomly showing other names.

Example:
I type "4" into the yellow highlighted search, this then shows department 4 which is located at 2 Horne Street. Now the contact person should be Person 4 but this is where the vlookup function isn't working properly because its showing me Person 1 instead.

I hope someone can help ASAP!

Thanks

thamkyou!! the first one works perfectly, im not using the second one, i dont want to change any of those cells