False advertising and no customer service at all

I placed an online order with all the black Friday specials(MAK694118) one of them were the evox whey protein . I selected the strawberry option which they had advertised and when collecting they gave me strawberry cheesecake. When I enquired about it they said they didn't have the plain strawberry and my option was to leave it there until they have it available. They then asked the gentleman who works in that department to come talk to me and he explained that evox don't have the plain flavors anymore and the online store has the old packaging which is incorrect.

So as a client, isn't this false advertising? I just feel like they didn't go out of their way to source the protein for me and if they don't have it why are they advertising it??

I left the store yesterday with the strawberry cheesecake flavor feeling disappointed