Lack of Customer support from Decorland nationwide

Well judging Decoreland's reply to my query, it is interesting to see that they do not back up their product lines (even the discontinued one) and not standing by the quality of their products. So apparently they are not willing to make any effort whatsoever to provide me with 2 little plastic wheels to replace the broken ones in the headrail mechanism which disintegrated without clear reason other than being perhaps of really poor quality. This is very disappointing. I bought for our house 4 custom designed wooden Venetian blinds from Decorland Kenilworth including 3 large ones, so now what? Am I expecting those blinds to brake one by one. I enquire how much it would cost to replace the smaller one I bought which has the broken plastic bits in the headrail and I got a quote for around R1700, that's how much those plastic wheel will cost me now. That is the last time I buy anything from Decorland. Wooden Venetian blinds are not cheap and should last a bit longer than a couple of years and especially be serviceable, this is not a consumable but part of a house chattels. This is totally unacceptable. I send several emails to Decorland headquarter which were totally ignored. terrible customer support. I also contacted Decorland Kenilworth and received the following reply: "they (Decorland factory) no longer have those parts due that range being discontinued so they no longer have any parts for that type of wooden venitian" Decorland treats they product range as disposable and take no responsibility for the quality of (or lack thereof) their blinds. So so infuriating! :-(