Worst service ever

I am in need of a new Phone app**** online had to settle for another phone I did not want they then proceed with the process and they put the debit order . Upon following up they tell me they don't have stock and they are very un helpful I now have to wait 7 business day in hopes the debit order is cancelled and before I can go in store and apply for a new mobile. I simply don't understand how they can process an order with no stock available and then they just transfer me to random departments because they dont want to help a person