SLAMMED PHONE IN MY EAR / POOR SERVICE

I placed an order on the absolute pets website however firstly order was not delivered on the promised day - the next day a driver arrived with a 20kg bag of dog food I did not order. I called the online center to query and was advised I would be called back so i waited - no call back i then called again and was told I would be called back still no called back. The 3rd time I called the lady rudely put the phone down in my ear. I am trying to cancel my order and get my money back but they are so unprofessional the phone was slammed in my ear when I asked to cancel.