We bought a 2 plate gas burner (Boko) from Macro online last month

We bought a 2 plate gas burner (Boko) from Macro online last month.On the adverti*****t, the 9kg gas cylinder was grey in color, but the gas cylinder that we received is blue. I just feel that Macro is misleading online shoppers. They should be transparent and give the correct information on what it is that's for sale. The gas outlets do not accept the blue gas canister in exchange but fill it up at an added charge. Even though it is a good price for the product and it works well, we are disappointed and would probably not have purchased it if we knew beforehand that the gas cylinder is blue and not accepted at Gas Outlets.