heathrow hoppa bus

I have only given this one star because I can’t give it less!
The Heathrow Hoppa Bus Service operates between hotels in the Heathrow Airport area and the airport itself at a cost of £4 per person each way, so £8 round trip.
We were staying at a hotel served by the bus service H7. It was advertised as a regular bus service. The morning service was fine as it was roughly every half an hour so we didn’t have long to wait for it. The return journey was a nightmare.
After a long haul flight, we arrived outside for the bus at 8.00am; it was raining and freezing cold. There was a shelter overhead but nowhere to sit so we were left standing. The pick up point is located right next to where the staff from the airport have their smoking breaks and it is kitted out with chairs all round and bins — lovely for them, but not so nice for people waiting for the bus. We were left breathing in secondhand smoke from the staff in there and the staff who chose to walk around smoking outside.
When I checked when our bus was due, it said 8.39am — almost a 40 minute wait — so I asked the Supervisor if that was right. He said it was a 45 minute round trip, which meant that only ONE bus operates on the route — not what I would call regular. In the end, the bus arrived at 8.50am and then we had to wait for a changeover of drivers. Between our waiting for our bus, 4 of the other routes arrived and left empty — some run much more frequently and the Supervisor asked one of the services to run a different route to take his friends back to their hotel. The same courtesy was not afforded to us however and we were disgusted by this. He did not even have the decency to let us know that the bus was running late and we were the only people waiting there for over 30 minutes.
We left very disgruntled, freezing cold, wet and tired. Not the finish to our trip we wanted.