The term 'cold' refers to the fact that you haven't laid any groundwork for your call. If you are calling prospects who have already shown an interest in your products, such as a prospect who fills out a postcard or website request for information, then it's referred to as 'warm calling.'.
Refutation is the act of proving something wrong or false. An example of a refutation is the argument that reverses a court decision. 1  the act of refuting, or proving false or wrong; disproof. 2  something that refutes, as an argument.
mid-15c., the proving of guilt, from Late Latin convictionem (nominative convictio) proof, refutation, noun of action from past participle stem of convincere (see convince). Meaning mental state of being convinced is from 1690s; that of firm belief, a belief held as proven is from 1841.