Very Poor Service Samsung Electronics

I Have purchased a Samsung S21 Ultra (Flagship Device). They Advertise that when you Purchase this device, you can claim your free pair of Galaxy Buds Pro and also Samsung Smart Tag. I have app****, followed procedure, and was notified my claim was rejected because of 'invalid proof of purchase' . this was all done in February 2021. I challenged the outcome, and finally, on 10 May they call me. after months of not getting in contact, that now my claim has been approved, and that i can expect delivery within 7 to 14 Working days. On day 10 i call, to follow up and ask when i can expect my delivery, where they inform me, that they do not have stock of the items and that there is no lead time. I was never informed about this, and only when i contact them, they gave me the information. Now it is 25 May 2021, and still have no answer, or indication on when i can receive my claim. February to May. With no solution