Bad Customer Service

My contract was due for an upgrade in February and I got a call from them on the 6th offering me an upgrade with the deliwaitvery date set between the 10 & 11 February 2015. I waited indian on those two days. On the week of the 20th I logged a complaint and only recieve an email on 5/03/15 saying an upgrade consultant will contact me. I logged another complaint on 2/04/15.I am still waiting for either the call or delivery that call, while my upgrade has already been processos on their side.When you call theit call centre u don't habe an option to speak to a consultant to assist you. Right now I an paying for a tablet I don't have in my possesion.