起来means a process of Bottom-up So the first 起来 is actually a abbreviation of (站)起来from sitting or lying to standing Bottom-up the second 起来了 actually is (从床上坐)起来了 from lying to sitting Bottom-up when you 从床上坐起来了，most of the time you 起床了 or wake up in English the third is the same look from the bottom to up which people always do,rather than from up to bottom

it means 人类排泄物 maybe is the third but you'd better not to say 屎because it is rude ,you can say 大便 or 粑粑or狗改不了要吃的东西

若干 equals several

Manager Wang called someone you can understand as Manager Wang called you about 2am/pm,but you were not near the phone at that moment.and one guy near the phone ,so he found you and told you Manager Wang called you (给你)来了个电话