Faulty microwave not repaired, no interest in assisting me.

I bought a microwave at the DW woodmead store on the 15 December 2017, I then went on holiday and on my return the microwave was not working. I took it DW cedar square store, where a manager named Lana, said she would book it for assessment at sumsang and revert to me.the microwave sat at the store for 10 days and was never assessed and this is a brand new microwave. She was no where to be found is always at lunch or is never available. I wonder if its incompetence or they just dont care about customer service. i took back the microwave and it sometimes works sometimes doesnt. im apprehensive about taking to DW because they clearly dont care. I dont know weather to try call the regional office. but it seems like DW policy is no after service. i would not recommend buying from them or Game . Best bet is a Makro or some other store. Im disappointed because i always used to buy from them and now i dont trust them. i hope this is just one rotten egg in your stores.