Bad service and clueless consultants

My mother bought a HISENSE 130L deep freezer on the 25 /11/2017 and still up to today she has not received her item.She went to the store store too many times and they always tell her they will deliver her fridge but up to now nothing.They told her to go to the Game warehouse to go and fetch it there ,this morning my mother woke up early to go and fetch her fridge at the warehouse only to find out the item is out of stock.My question is why tell her to go to the wharehouse when you know that it is out of stock?She wasted R500 for transport cause she was told to bring her own thing cause they won't deliver it she must fetch it herself.Why???its now almost a month and we have no fridge in the house everything is now rotten ,things we bought knowing we will have a deep freezer .Please help