BAD SERVICE

I made a purchase with home choice for a stove that came with a free microwave and the order took longer to be delivered and then a consultant form home choice called me and told me they don't have the microwave in stock and they going to give me something else instead I bought the stove because they said you get a free microwave and then told the the gut to cancel the order since they don't have what i ordered initially now the invoice is reflecting on my statement and i called them several time to say they must cancel the order but they did not ,thyme telling that the order was already dispatched how can they dispatch some thing that is wrong because that was not what we agreed on , now they telling me they waiting for the goods to arrive at home choice before they can cancel the order ....BAD SERVICE