I purchased a flat i...

I purchased a flat iron wit them about 2 months ago on purchasing they say it has a 1 year gaurantee if u not completely satisfied with the product so i kept my slip an the box after using it for a month some how it just doesnt heat up the same like it use to i went to the parow branch to ask them to exchange it cos im not happy with it i dnt wnt a refund just an exchange they refused telling me there is nothing wrong i mean am i not the customer im telling them its not the same anyway the head office then calls me but not even giving 3 rings just 1 ring then they put of i mean really what typenof business does that does their managers even no wat they doing nontheless i email them sent them everything but still no reply no email nothing so im sitting with a product that actually has no gaurentee like they said they have