Transfers and Taxi's

Our family arrived in 2 groups recently, 2 different days, and BOTH taxi rides in suburbans were shaken down by the drivers. The latest is that they only get paid a \"wage\" by the company for airport trips and so have to rely on tips, so \"the fee hardly pays us to go to the airport, we hope you know tips not included, etc., etc. Of course we did tip for the bags, but nothing more that usual.