I'm normally not very good at giving extra clues, but will try...
The answer (ie the surname)has seven letters.
You need a common, everyday word ( 4 letters) for 'extremely' and a common everyday word for 'tasteless' (as in 'in bad taste') Take the first letter away ('starter binned') - the three letters you have left fit inside ('filling') the four letter word. Hope this is of some use!