I'm am disgusted with the poor service of Telkom

Telkom and Samsung this is now my last resort, trying to use social media to get something right And hopefully the right contact person. I am sick and tired of all the *********** call centre employees and zero help from both of your companies.. I pre-ordered a Samsung note 20 for one reason only and it was for your promotion running to receive a R4000 voucher. My phone was bought before the 23rd. I did the upgrade via telkom call centre I received my phone and tried to claim my voucher only to realize I need a tax invoice proof of purchase for the device of which I did not receive. I have been on the phone for a full week now. Being cut off. Being send to different divisions and I even went into the telkom store for assistance but no one seems to be able to help. So Samsung seeing that it was your promotion and telkom is totally unhelpful and *********** can you please assist me. Or else you can come and fetch your phone. I DONT WANT IT ANYMORE !!!! AND TELKOM I WILL CANCEL ALL MY CONTRACTS WITH YOU. Samsung Global Samsung Galaxy Note 20 and Note 20 Ultra