Bad Customer Service/False Sale

Hi On the 22nd of May I received a call saying Im due for an upgrade ect so I agreed to doing the upgrade, consultant says delivery will take place within 2-3 working day Im happy because the new phone would be for my daughters birthday which is the 6th of June I still tell the consultant so perfect....its the 1st of June today 10 days later of which 6 is working days i decided to call and find out where the tablet is as I never received a waybill number and therefor can not track it on RAM's site and thought maybe because of the lock down deliveries takes longer, to my surprise after trying to get hold of a consultant for over 2 hour finally I a consultant answers and says the tablet is on back order and there is no ETA on it...is this fair? if i didnt call then what?