Failed to provide additional vouchers

I was looking to buy a phone and Samsung had introduced me to an offer tat included a stay at a hotel(S8 Spring break voucher promotion) , this was one of the key reasons for me choosing this contract. Since purchasing the phone i have been in contact with the people at Samsung and cannot get my hands on the voucher that was promised to me. I have been given the run-around form the people i have been in contact with , with no one giving me concrete answers . I sent a snapshot of my imei number through email to the contact person and i received the message that my application has been a success but i am still waiting for the voucher.You failed me I'm the only one making follow up. Now I email you never respond today I called I'm told you contacted me. I wonder if there is a such promotion please keep the promises