Any member here encounter the TNB issue of double billing, or the first meter and second meter will have variation ?

For instance this condo have 5 TNB meter, which one of the meter will connect to second meter which only to shop lot unit. However the first meter and second meter not tally...

Also any experience on the double billing able to settle with TNB? like the management already requested the breakdown of the monthly charges for the year 2017 but unable to provide at all.. we suspecting they are double charge us...