I purchased a bed from sleep masters

I purchased a bed from sleep masters. A month in the bed started feeling extremely uncomfortable (this bed was recomemed to us by the sales person) it was out of or prices range but we decided we need a decent bed. I complained on the 7th of October and was contacted on the 29 to inform me an exchange will be made. They promised the bed would arrive on the 6th of November it didn't. Someone called me to ask if the bed was delivered I said no they said they would call back to date they did not ( being the 14th November) when I call back they tell me I was not available on the 8th November to receive the bed each time I tell them I was not contacted for them to have made any such arrangements with me. Each time I call the store they tell me it's a warehouse issue.