Poor customer service

I had previously written a complaint about discovery about fixing my mom's cars and delays since the issue was lodged on 19 June 2021 and inconsistencies from them, I removed the complaint when they started to make progress, Discovery the car you repaired is not working, it came back after a day the battery was dead and not working(not that it was your responsibility) but she bought a new one so she can know if the fault was not on their side, a few days later the car does not pedalling , the accelerator did not respond, it just went quite we alerted them of this they said they will contact the panel beater to arrange towing after two days, the panel beater alerted Discovery they did not repair the engine only body work as per assessment as such they are not liable from this day the panel beater told discovery their feedback, net assesers was alerted nothing on the email only asking the panel beater the issue through the email, THIS IS DISGUSTING SERVICE, now everytime my mom tells me how hard it has been without her car since JUNE 2021 with the incostistnecies of the company at large it hurts, everytime We have to follow up on them, I do understand of delays that are unreasonable but sometimes it is just poor service as in this case, It is very difficult for my mother she works in an extremely rural area and has a new born without a car , travelling with her to a nearest town which is above 50km away and with one bus a day is very difficult, it is pitty we experiencing this, it is totally unacceptable for a company of your status to sort out a small issue like this it is disappointing, at this point I am tired of complaining for the company to do their DAMN job . taking the phone and calling net asseser to come and take the car and assess and do feedback and get a closest panel beater to repair should not take a whole week, at least we are not angry on the fact that it was not fully repaired but just accountability to act upon a query I AM TIRED