Changing broadband isn’t always a smooth transition

One of our clients is a business centre who told us with short notice that they were changing broadband providers.  This created a problem as they hosted their own email server from another company but also wanted to get away from this as it was more than they needed.  I would need to make sure that their existing clients could still access the internet and also make sure their own network was safe and secure from anyone else. They like to use our computer support service whenever they have a problem.