Unhelpful Service

Samsung run a promotion from October to December 2017. On the 20/12/2017 I had purchased a fridge, the store did not have stock and was promised delivery on the 23/12/2017. the product was not delivered. When I contacted the store, I was informed the SUPPLIER ( which my understanding is SAMSUNG) was out of stock, and they needed to contact me directly (supplier) to inform me. NO CALL. After numerous calls on the 07/01/2018 my fridge was delivered. on the 10/01/2018 I sent an SMS to claim my reward voucher of R4000 and was advised by booklet to wait 48 hours. NO RESPONSE. Having so much of trouble from the time I purchased I did not contact the ********** number. I was tired of speaking to people whom were very unhelpful, I did however send a mail to support on the 18/01/2018, which I was informed to call customer support. Customer support could not assist me and was given the 087 number. When I called the guy who answer said I was supposed to call them and they would of told me exactly what to do to redeem manually. HOW WAS I SUPPOSED TO KNOW THIS??? No one from Samsung contacted me for the delay in delivery and now I had to follow up. Now I need to take even more effort to claim my voucher which is rightfully mine and can provide proof o purchase on the 20/12/2017. IS THERE ANY HOPE IN GETTING THE VOUCHER??? DOES SAMSUNG NOT WANT A HAPPY CUSTOMER???