Disappointed to the max

Game what a disappointment , after being promised that our laptop ordered online will arrive within 2 days specially asking this as we needed it before a family member need to go over seas and were promised this wouldn't be a problem seeming Game Somerset Mall had stock. This was said at Somerset Mall Now its more than a week later, when calling they either drop the call or cant answer Im going to hospital tomorrow and need to change delivery address but how do I do this if they keep dropping the call ?????