Eskom meter movement - ? ******* insider *****ing units from old meters

Eskom replaced my old prepaid box with a new prepaid box. The technician noted the original units, which was 4268.48. However, now Eskom refused to refund the units and only gave 76.80, claiming that it what they have recorded. I emailed them the photo of the meter movement form and now they say they need to verify it and their working time is one month. They cannot explain why there is a such a discrepancy between the units but it seems to me that someone has altered the form so that he/she can ***** the units.