Will the counter work if zero is mixed up between apartments?

Hello. We live in an apartment building, the neighbor's apartment has been empty for a long time. After the arrival of neighbors began to notice increased (from the usual) energy consumption.

It turned out by chance that during construction, electricians mixed up the wires of sockets adjacent to neighbors. The wires were switched as they should have been originally. Based on the number of outlets and the number of wires in the distribution box of the outlet groups, it turns out that somewhere there is a hidden (concrete) distribution box. There was a question.

What if the neutral wire between the apartments is also mixed up and connected to the electricity meter of the neighbors. Could this affect the meter reading?
P.S .: The situation was not much more confusing; therefore, he described it more simply, but in fact.