JMC poor aftersale service

In August 2020 I purchased a Landwind 5 from Jaingling Motors South Africa Dalpark Brakpan the Sales Person was Shawn Main on the 13th of August they delivered the vehicle to me in Standerton. On the 17th of August I contacted the sales person by whatsapp and informed him the left front door electric window button is not working, he informed me when I bring the car in to fit the towbar I must bring it in to them to be fixed. On the 31st of August when I fitted the towbar at Rhino Bar in Brakpan I took the car in to JMC for the left front window and was also asked by Shawn if there is any other defects which I need assistance on, I informed him that the left rear schock absorber is also in defect, he took the car around back to the workshop and returned within ten minutes only to find they only fitted the number plates, which is also not correct as they where suppossed to register the car in Standerton Mpumalanga as promissed. Shawn informed me that they will be ordering the needed parts that's now for the window button left front and the rear schocks. He also said as soon as a borrow car is available and the part are available he will let me know to bring in the car. On the 25th of Sept I contacted Shawn and requested feedback he informed me the parts will arrive in the week of the 28th of Sept. On the 20th of Oct I requested feedback again this time I was told the Workshop Manager will contact me. On the 21st of Oct I contacted Shawn again again was told the Workshop manager will cal me, so I requested the Manager's number and called him myself, the Manager Dirk then informed me that he will find out what is going on because nobody informed him of anything wrong on my car. He will phone me back with news, on the 23rd of Nov I contacted Shawn again and asked if he can find out what's going on he informed me he is not in the office I must phone Dirk. This is totally unacceptable service from JMC Dalpark up to date my car is still not fixed both front window swithces are not working the left rear schock absorber is not in good condition, I do not get any feedback from JMC Dalpark. Please assist.