<human>: cross-post from /r/relationships, but I was hoping to hear something from the finance side to see if it's worth the hassle. *If this is not appropriate here I'll promptly delete it*.

I moved onto this property about a year ago. I live in a mother-in-law and I share the utilities with the main house, 70-30 split.

With the first neighbors in lived in the main house, my bill came in at $30-35. When they left, I had about a month to myself at $27.

My new neighbors came in and the it was closer to $35-40 a month. A bit more, but hey, we're neighbors.

The summer came and they installed an A/C unit. I do not have an A/C unit, nor does anyone else on my block. Because it gets at most 80 degrees and maybe five 90 degree days. You open a window and it's all good.

I mentioned my concerns to my landlord and she said there was nothing to do about it. Summer bill. $45-50. At this point, I really feel like I'm paying for them and I bring it up to my landlord, who says they'll talk to them. Nothing changes and now I don't know what to do.

The summer ends and the bill drops to about $40, so I just eat the difference. But the first "winter" bill comes in and it's at $70.

I'm using my wall heater, but it comes on at most twice a day. On top of that, most of the bill came from electricity, which...I don't know how can be so high. For 4 people, the total was $230. I've never paid more than $40 my life in utilities and now it's nearly double that.

My questions are basically if this normal? Should I address the neighbors directly at this point? Should I just suck it up? Is it not a big deal? I'm just frustrated at this point because I'm barely in my house and I feel like this is just throwing away money.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: My shared utilities bill jumped from $40 to $70 in one month despite minimal usage on my part. Is this normal or should I talk with my neighbors?