Something's not right there timi.
1. The surcharge is only applicable for applications submitted and paid for after April 6 2015
2. Besides which, any applications for visa's of 6 months and less are not subject to the surcharge.
I believe VFS are totally incorrect.
Here's what UKVI state:-
...........
The surcharge will be introduced on 6 April 2015. It will apply to applications where payment is made on or after the 6 April.............
The health surcharge will be paid by non-EEA nationals who apply to come to the UK to work, study or join family for a time-limited period of more than 6 months......