False advertising and empty promises from Vodacom

I did an upgrade with Vodacom in May 2019 and was promised a complimentary Huawei blue tooth headset as part of the upgrade package, when I received my phone and contacted them because it was not included, the lady advised me that they don't have stock, but will forward it to me asap. After no communication from them I contacted them again, after a few weeks and was then informed that they can't supply it anymore. They did even bother to let me know, if they can't supply it anymore they can at least offer me something exchange. The agent just told me, she is sorry, but that they haven't upgraded their website yet with the correct info. This is nothing else than false advertising and empty promises. The headset was part of the reason that I upgraded to the Huawei p20 lite. I have send an email to the email address, as supp**** on their website for complaints, but they didn't even had the decency to respond. My second issue is the fact that they don't even bother to send their Huawei users any details or communication regarding the current issues with google. This is very bad service, they obviously don't care about their customers.