bad products

A month ago I purchased a blow dry brush at Legit. <br> I used the brush twice and all seemed fine. on the 3rd use. the bristles of the brush burnt onto my hair. <br> My hair length below my shoulders. this resulted in my hair breaking to the length of 2cm . <br> Never in all my years of using different sorts of brushes, expensive or inexpensive. clicks or pick n pay, has this ever happened. <br> How can bristles where heat will be app**** be made of such bad quality. <br> <br> Very upset ..!!!!