Appalling after-sales and promo service

I purchased a Samsung A55 through Vodacom early October and app**** for the promotion (ear buds) through Samsung WITHIN the indicated timeframe. The phone was registered and I have emailed, called their promo line, and spoken to various agents via their Member Text Chat. There is always an excuse on their side for why I am not getting the ear buds as per their promotion. Today's agent really was the last straw! He kept calling me by my surname, contradicted himself, and kept asking me for screenshots even though I explained a few times that I am unable to upload the screenshots to the app, etc. At this stage, it is not even about the promo any more. It is about the principle. They don't call back or answer their phone. I sincerely wish I had NEVER purchased anything Samsung related!!!!