Shocking after sale service

This is not the first occasion where I have struggled to get Jenrick to come out and do maintenance and repairs. When they installed the new door, the motor came off the ceiling within 12 weeks and they charged me R800 to repair it, after phoning continuously to get them to come out. This time they serviced the door and charged me for batteries for the motor that had not been installed yet. I had to call continuously for 14 days before they came out. Each day Lara promised they would come tomorrow. Eventually they came after we resorted to threats. How embarrassing for us. Once they came no one even contacted me to apologize for the stress and anxiety created over a set of batteries. It is clear to me that I am at the very bottom of their priority list. Clearly only new customers are important. When I called on the 14th day in a row Lara pretended she was too busy to take my call probably because she was embarrassed. The lady who answered the phone pretended Lara was busy and the owner Rikki told me Lara wasn't in. I do not appreciate such a lack of integrity. While their product is decent , their after sale service is absolutely shocking!