Wrong handset

I app**** for the Huawei P8 Lite and specifically said I want that handset because of the specs and the fact that it takes 2 sims . Apparently there was no stock available and I had to wait which was not a problem. I app**** for the contract online 24/07/2015 and was excited when I received it today 07/08/2015 at around 10:30am. Just to find out Its the single sim version ALE-L21 with no option for Dual sim. Was sent 2 simcards with the mobile as well but the nano sim slot does not pick up the sim. I am extremely unhappy and wish to cancel my contract with immediate effect or get a replacement ASAP. I don't want to carry around 2 or 3 cellphones because I need at least two numbers with me all the time cause of work.