Samsung multinational after sales failure

I purchased both a top of the range domestic washing machine and tumble drier from Makro ; my tumble drier 'broke' two weeks ago and since then has been most frustrating. the initial technicians dispatched were great but, as soon as they intimated that the machine should be replaced given it is still 'new' things have ground to a halt and we are being pushed from pillar to post. samsung promise to phone us back daily but never do and we are given the same standard response when following up - wait for it, we will phone you back!! i am most agitated and do not know what to do but do expect Samsung to honour their guarantee and at the very least be straight with us. i regret having purchased Samsung and am reconsidering using any related appliances which is a pity as i am a Samsung fan. from aircons, phones to, you guesses it, tumble-driers.