Easy answer. 4 hours is the maximum time to respond to a call, and 8 hours is our maximum time to have your printer up and running (during working days and working hours, Monday – Friday, 8:00 – to 17:00). We have a Brand Guarantee, which states: “Always be printing with GIT; If we can’t fix it in 8 hours, you will be printing for free on us!” In the rare cases that we can’t fix the printer in 8 hours and you do not have an alternative printer, we will send you free of cost a standby printer until the problem on your printer is fixed. Even if for any reasons, such as global shipping delays and similar supply chain disruptions, your particular toner models are not shipped on time, we shall provide you with an alternative printer at no extra charges until the problem is solved!