I am helping a friend/client defend a summons from their former business Internet suppliers.
Long story short, they were happily using BT for their phones and Internet for many years, until some Mickey Mouse outfit called them and said they could provide everything BT did at a fraction of the price.
They foolishly agreed before talking to me and soon came to regret the decision as:
1. The Internet regularly went down for long periods.
2. One fix suggested by the ISP was too disable the fixed IP and change to dynamic. As they use CCTV and Remote Desktop this was not a great sol