Rolux Lawnmover

We bought a Rolux lawnmover combo with the chainsaw. After one cut of the grass the lawnmover don't want to work. I spoke to a Chris at Makro and he told me I must bring it in and it will take 3 working days then I can have my lawnmover back. My husband took in the lawnmover and Chris wqas so rude and said he did not speak to me, but it takes a week. After a week my husband return to Makro and there is the lawnmover still there and other lawnmovers is stack on top of ours. (they dont care if the damage your lawnmover). He was still rude and would not listen to a reason and just said sorry I can not help you and you have to wait. When he put the chainsaw together there were also a part missing so we have to take that in as well. Three weeks passed we dont hear anything and still dont have a lawnmover. I want my money back I don't want to deal with Makro any longer and also not the sales people. My argument is, if a new machine broke, there must be something wrong, why do I have to wait for a new one. Rolux surely have insurance for fabric faults, I don't trust Rolux or Makro anymore. Pleaase assit me.