Bosch Home India — Washing machine water inlet problem

Recently on 31st may, I registered a complaint regarding my washing machine stopping in the middle of wash with tap symbol blinking, so next day the technician visited but was not able to identify the problem so he left collecting service charger without without giving bill. Yesterday I registered new complaint requesting new technician but there no response form customer care they referred me to same technician and he is not lifting my call. So kindly request you to look into this issue.