Over promise , under servive

ame sold me a fridge they dont have in stock and i had to be disadvantaged for a week after they promised to deliver on monday. I made the purchase on the 22nd of October and the salesman promised that they will deliver on Monday ,after i explained that am gonna sell my old one just before they bring the new one. After severally contacting the store its been a week now that am seating without a fridge and all my groceries got rotten and thrown away