Poor Service With Online Birthday Specials

I ordered from Makro online for the 1st time and never again. There was a special which I purchased on 31 July 2023 (6 x 750 ml Fat ******* Golden Reserve wine with a free 1.5 L bottle). I received the 6 x 750 ml's the next day (01 August 2023) without the 1.5 L bottle and I immediately called in and was advised to also send an email to *** which I did. I also noticed that the special was extended to the end of August 2023. To date, I made 3 calls (01 Aug, 11 Aug, 04 Sep), I received multiple emails stating that everything was delivered so there's no issue or they will escalate it to the store, I received 1 call on 25 August stating that there is no stock so they cannot do anything and the call will be closed and after being patient I am now rating them here as really bad.

1. Do not keep specials if you cannot fulfil them 2. Do not extend specials if there is no stock 3. You cannot call at the end of the month when the issue was raised in the beginning

This is really bad service!