That's often true of specialty stores, especially independent local ones. It's often not true of big chains and stores that don't have a narrow focus.
It's also often the case that they will steer you based on their knowledge of their sales incentive structure, which is often much better than their knowledge of product.
Out of the last 5 times I've gone into a store hoping to get some help and advice from an employee, I reckon 3/5 they have ignored me until I found what I was looking for, or concluded that they didn't have it and just left.
I've even put my hand up in the middle of a store, like I was in school, waiting for assistance because ther were so few employees around, or because after asking me if I needed help as I walked in the door, they lost interest in me, and decided to have a chat with their colleagues.
I probably wouldn't have helped you either, that seems like incredibly strange behavior.