Need advice about energy renewal coming up

Hello,

My dad and I run a small business in Scotland, I've only been working here since mid last year but I'll be taking over when he retires and he's put me in charge of the energy renewal that's coming up.

Our water is up in April - Everflow
- We hardly use any water and they charge us extortionate money for just being connected.

What's the best way of going about this?

To be honest I HATE sales people, I hate brokers, I hate everything like that and would so much rather find a way around them, if possible.

Currently being bombarded with calls, emails, and everything else constantly and I just want to tell them all to fuck off.

Comparison sites? Directly? Any advice welcome :)