Feel misled and distrustful

I upgraded my contract and decided to take the Samsung S20 Ultra.I was told that I qualified for a sterilizer and a Samsung television.I followed the steps to redeem my vouchers where proof of purchase was required together with a valid TV license.After a month I did a follow up and was told that there was a backlog and that I should wait a couple of days.Weeks went by but nothing happened.When I followed up again I was asked to send through the proof of purchase.I was asked 3 times to provide the proof yet again. On my last follow up I was told that the vouchers I redeemed was suddenly outside the promotions period.This is after one of their agents told me that the device would be delivered to my house.My view is that Samsung and all the "Specials" they advertise and commit to is not truthful and is misleading.I mailed them yet again and there has been no response to my emails till now...

Email sent:Hi Kirsten This would be the third time that I would be sending the documents you are requesting. I sent them through to your consultant this morning. In respect to the sterilizer your last consultant told me that you had a backlog and that you would deliver the device to my address of 65 York street Woodstock, Cape Town, no mention was made of it being outside of the promotional period. I took the Samsung device on the belief that you are reputable and that the offer of the 2 items was lucrative.You are now giving me a bitter taste in my mouth. I sent through all the required documentation to Kholofelo Mhlanga this morning. I trust that Samsung would do the honest things as per the commitment that was made to me when I purchased my phone where 2 vouchers was made available to me.

I trust to get a satisfactory response on your next communication.