I will resolve them as soon as possible. If the problems fixing takes time, I will provide a temporary solution in the meantime. I even work in weekends and public holidays.
I have long-term relationship with most of my clients. It is very common for me to add functionalities or make changes to an existing project. Every project is designed for extension and customisation
My hourly rate is not cheap. But the price I charge for each project is very competitive. I give fixed price for each project. It gives you the peace of mind of the budget.