No response after 3 reports to the helpdesk

I had my washing machine repaired on 15/08/2015. The work that they did is still under guarantee (3 months) and I phoned them on 02/10/2015, they said the tech will phone me, which did not happen. I phoned them again on 12/10/15, same story, the tech will phone me because for some reason the call did not go through to him (even though I held on while she phoned the tech). I phoned again this morning 19/10/15. I was given a reference number and told that the tech again will call me.... Still nothing!!!! Are they waiting for the 3 month period to lapse so I can pay another R2 189?