Kingprice need to improve on their services

Their service is good but in future they have to choose a good and reliable repairer because it cost us time, recently they told me they i won't be able to extend days on courtesy car because it's not their problem that the repairer is still awaiting parts so it means I won't have a transport to work. The thing is I didn't choose the repairer and it's not my fault either that the parts delayed