Sunday roast portions suddenly halved - no potato either

This is now the 2nd time I get this service. As I'm ill I asked someone to buy the Sunday roast for me. No potatoes, one piece of meat and the 2nd piece is a sliver. Half the portion of the usual amt of veg. If you want to halve your portions then charge less. Apparently the staff who dish these poor portions are "new" which is a LAME excuse. Then train them properly first!!!