Overcharging Vulnerable/Elderly Customers

My Grandparents, like many fixed-income elderly people, struggle to meet their bills. Having been asked to look at their accounts I was SHOCKED to learn that Virgin Media is charging them £116/month for a basic service (broadband, telephone and no-frills TV). This is up from £107 two months ago. It looks like Virgin think the elderly and vulnerable are easy money - and knowing that as a group they are reluctant to change - consistently overcharge them. For the basic service they are receiving they shouldn’t be paying more than £40/month. Looks like I’ll have to move them to a more trustworthy provider.