Struggle getting my replacement fridge from Makro.

Struggle to get my replacement unit. The fridge i bought from them a KIC 314litre water dispenser was garbage and malfunctioning and KIC sent technicians three times to fix it and it still did the same thing. KIC acknowledged the fridge is faulty and credited it. Now trying to get hold of Makro to get my replacement unit delivered and this garbage unit taken is a pain. been wasting my time and airtime.. The people there just drop the call and hang up. i do not have infinite airtime to be calling them after all they are the ones selling garbage fridges.