Poor service

Took my wifes Polo Comfortline for a service 3000 km back.They did the service as well as a service check.This was done but the battery water was not checked.The manager tolld me today she must take the vehicle to JP motor spares to check the battery.They could not find anything wrong with the batt after the batt was filled by Tavcor stanby mechanic 3days ago.They also told her that the battery,s life will mst defenitely shorted by running dry.Unless Tavcor cannot supply me with video footage that the battery was checked I will keep them responsable for replacing of item with no cost.There are about 30 points that must be checked on service inspection.This make a person wonder what else was not checked.Did the pen do the work or the service mechanic?