Misleading deals and no regards for loyalty

I have been a loyal customer of MTN for years now. I purchased an S9+ from them last year and I was happy. I purchased the S10 today, which was 2 days over their earbud promotion. I was under the impression that I would still get it as the process began prior to the end of April. They completely dismissed me and arent willing speak to Samsung to get my earbuds. Vodacom have extended their earbud deal with Samsung and are more than willing to take my business. I wish MTN cared more about their loyal customers than they did about their rigidity