Complex sentence: In a combination of frustration and confusion, Lacie causes a scene by mouthing off the attendant and security gives her a 24-hour punishment that temporarily lowers her rating by one whole point to 3.1 and all downvotes she receives will incur a double multiplier.
Split into simpler sentences: In a combination of frustration and confusion, Lacie causes a scene by mouthing off the attendant. The attendant calls security, who gives her a 24-hour punishment that temporarily lowers her rating by one whole point to 3.1 and all downvotes she receives during this period will incur a double multiplier.