Repair

Good day, tell me, bought in the store a new macbook air 2018, came home unpacked, launched and immediately began problems: system hang and request to make a service replacement akkamulyator, passed the laptop to an authorized service center on December 5, they ordered twice the motherboard saying that they may pryahodit they scraped off the faulty, now ordered the battery, but the problem is that it will come only on January 16, how can you speed up the repair process and is it possible to replace a new laptop ?