No sevice No Feedback Dont care about customers

My customer came in with his pickup having problems i found the problem and orderd parts from GWM newcastel who is the nearest agent for the parts i need. got a qoute in biginning Oktober 2017 and payed for the parts i was told parts would come in two days . a week later(10th Okt) they got the parts only and then sent it to me. Not all my parts came but no one informed me all i got was a hand writen note on the invoice in the box of parts. So i called and the sales person said well there is nothing he can do it is on back order ill have to wait and he would get back to me. he never did. needless to say my customer was not happy and i had to give the customer transport untill his pickup could be fixed. so after a week waiting for feedback i had no option but to try and fabricate the part that was missing. So i got the pickup going and gave it to the customer. (22nd Okt). in Jan 2018 customer comes back with complaint that the same problem is back. so i had a look and sure as can be same problem due to the fabricated part not holding up witch would not have happend if i recived my parts. so again i order the parts again from GWM Newcastel. i made payment and was told my parts would be there the friday. well again nothing when i called i got the same reaction. parts did not come i must wait ther is nothing he can do. well by the following friday i got my parts and again the same part as last time is not there. so i called and asked and got told the wrong part came he will re order it now and would be here in two days. well its been two weeks and still no part. i called again and he said that it has been sent to me via timefreight. so the folowing day there is nothing by timefreight. so i call and ask for the tracking number and get told he will send it to me and for the past week everyday i ask for the tracking number and get ignored. again i must supply transport to my customer who does about 1500+km a week. who is going to pay for that me again because GWM staff dont care about customers. They dont care if you paid for your parts last year they dont care if you lose income they get paid so why worry. and no one cares because its not importent to them because they got there money so let everyone wait no matter what. and that is how there custemers get treated like ******* or maybe its because im white i dont know all i know is i have been waiting basicly 4 months for a part that was paid for 4 months ago and still nothing. wonder where they go for costomer service traing