Comment: "New acts" are in your view events that happen in Aļļaah Himself, and since they have a beginning they need to be brought into existence according to a specification, which means they need another act to exist, and if that act has a beginning, then that one also needs another act and so on, in an infinite past loop, which cannot be completed, so the "new act" can never exist. Since you have implied that there can be an infinite number of events in the past, and thereby rejected its obvious impossibility, you have no way to prove logically that the world has a beginning. This is because you have stubbornly or ignorantly rejected the impossibility of the completion of infinite past events, so there is no logical way to prove why the world cannot have infinite past evens, i.e. no beginning. The reason for this is that you rejected the impossibility of infinite past events, which is the main premise for the proof for why the world (defined as everything other than Aļļaah) must have a beginning.
Wahabi says: This statement is out of date because today we can prove the beginning of the universe by appealing to the best scientific evidence (e.g. big bang cosmology and the second law of thermodynamics?)
Comment: These are scientific theories only, and theories can be proven wrong. Moreover, they do not prove, as scientists see it, that this world is brought into existence by other than it, nor do they by themselves prove unequivocally that there were no events prior to the proposed Big Bang. To prove that, you must accept that completing an infinity of past events is impossible, as it clearly is. This again means that you must reject the idea that Aļļaah’s Will or Creating happens with a beginning.
Sunni Answers 
May Allah give you patients Ya Shaykh… I have never seen you so busy.
Indeed, Allah’s attributes of Creating & Will have NO beginning… The beginning occurs in the created, but not in Allah’s attributes… The Wahabies seem to have problems excepting this because they try to imagine this claim of ours (proper sunni belief) but they cant so they reject it… However, that is the whole point.. it is not supposed to be something that can be imagined, as we know Allah’s reality is only known by Allah (our minds cant not imagine Him)… Why is it so hard for them (Wahabies) to come to terms with this… it only makes absolute sense (whatever you imagine in your mind, Allah is other than it, and to believe that you are incapable of knowing the reality of Allah, is knowing Allah correctly).