I actually feel sorry for these folk - and their shit, pathetic lives.
Moaning about anything and everything; moaning when it's cold, moaning when it's hot, moaning when their bins aren't emptied etc etc etc.
The variable rate will be cheaper than your fixed rate, so just leave it to run onto the variable rate.
No reason to fix it at all with rates being at an all time low.
Not even sure why you fixed it 3 years ago (?)
I had an injection. It was without doubt the most painful thing ever, and didn't work at all.
Plenty of exercises available online which will help but there are no remedies.
As teachers are always banging on about how they do mountains of vital, unseen work after school has finished, why don't they stage evening walkouts...?