No Admin Fee and GST

This is a sticker on the inside of the window in a taxi. It says:

NO ADMIN FEE & GST
when you pay with Dash!

Even assuming you like the ampersand in this font (I don’t), the conjunction needed here is ‘or’.

(No admin fee) and (no GST) => No (admin fee or GST)

The sign that says “no food and drinks” is also wrong for the same reason.

However, “Don’t leave your handphone & wallet behind”, assuming we find ‘handphone’ acceptable, sounds fine, since ‘handphone’ and ‘wallet’ can easily be considered a pair of items that would be forgotten together.

dont-leave-your
“Record shows 50% of the reported lost cases in taxi are Handphones and Wallets” on the other hand, has several problems…

I would rewrite that as follows.

Records show that 50% of the items reported lost in taxis are mobile phones and wallets.

On the other hand, I like the ampersand on this half of the sign much better. Even if it is crowding the descender on that letter ‘y’.