Yeah that bugs me too. Happens a lot in Pampanga although when I went to the BQ Mall in Tagbilaran it didn't happen once. Left totally alone and wasn't hassled at all.
its one of my pet hates when you go into a store here there seems to be 10 sales assistants to every customer then they follow you around the store I get so mad I end up leaving the store without buying what I came in for lol