Makro sells products with ZERO after sales service

We bought a standing fan from Makro Silerlakes in December 2018. This year in October when we got home the circlip holding the 2 fan cover s together snapped of in the middle and the fan covers where lying on the floor. We took it back to Makro and explained that the part needs to be ordered from Defy. 2 weeks later we got a call to from Makro to pick it up as they cannot fix it. Yes we know that. As we explained THE PART MUST BE ORDERED AND REPLACED IT CANNOT BE FIXED. We then got a number to phone for the part. This was a Defy call centre. They informed us they do not have the parts but we must ordered it from Hirchs in Silverlakes. Which we did and are still waiting in this long hot days for the part. So:

Firstly: What does Makro not understand about ordering a part and not try to "fix" something that cannot be fixed but must be REPLACED as they were told over and over when we where there.

Secondly: Why doesn't Defy have parts for there own products? Why do I have to contact a store to order the part that I did not buy it from?

Truly baffling.

Now I sit with an expenses fan that I cannot use because of a small little part.

Pathetic.