Get advice on how to disconnect if it is hooked into a cistern.

The drain in bathroom was disconnected and a little piece was missing.  

Also, sub-metering is not required, you can connect electrical and water to the main house as long as you have proper disconnects installed.

.): there is a disconnect between what they want and what they are seeing.

Here is an example of ours:UTILITIES.Landlord requires supply and maintenance of the following utilities at the unit: electric, natural gas (if applicable), oil (if applicable), water/sewer, garbage/recycling.Telecommunication services are optional.Tenant agrees to pay for all services and utilities supplied to the premises during the term of tenancy, except __________________________, which will be furnished by Landlord.If Tenant moves out before the end of the lease period, Tenant must still pay for utilities to the end of the lease period, just as rent must be paid to the end of the lease period.Tenant agrees to notify utility companies of the exact date their tenancy begins and ends, and agrees to pay all outstanding utility bills.If Tenant causes any utility to be disconnected, Tenant agrees to pay for reconnecting the utility, plus damages caused thereby.If we become aware the tenant is not current with paying their utility bills, we call them and talk with them about it.

At first I thought that we got disconnected, but I called her back - no answer.  

I should be able to disconnect and turn off my phone for a good night sleep.

I hate that the city has turned to a dust bowl of its former glory but to be honest I don’t actually live there so I can disconnect from that without any real sentimental attachment.

So I am thinking about purchasing electric baseboard heaters for one of the apartments and disconnecting the heating ducts to that apartment.

I would disconnect it from GFH and reconnect.