Horrible service at Renault SA

I wish I could say, Great service !! But actually it's PATHETIC & POOR !! First of all, we ordered a new set of valves for my car (Which is supposed to come in a set of 8), but only 7 arrived. Then after we've reordered the parts (On 10 June 2019), I was promised that I'd receive my parts within 10 days as they can arrange an emergency for me. Today, after I phoned again to follow up on the parts, I was told that I'd only get my parts on 8 July, How's that for an emergency ? That means, in total a "10 day delivery", will be taking 28 days, 18 days longer than promised. We live in the 21st Century, with technology improving everyday, with planes traveling between France & South Africa on a daily basis. How is it possible for one small box to take 28 days to get here, if I was also told by Renault that they make use of air freight once a week.

I wish that their "after sales service" was as good as when they're trying to sell you a vehicle.

Feedback would be great, instead of me phoning the whole time and following up all the time. Just a bit of work from your side would be awesome.

Can someone please give me an answer ?

Your Response to me was that it would be sent through to customer care, but I've spoken to customer care earlier that day, and was once again promised to be contacted back shortly. Still nothing came from it and I'm still waiting. How much longer will I have to wait for a proper response from you ?