Shrinking responsibilites?

I got into a near arguement with a colleague a moment ago, and I was irked with the look in his eyes, like I am shrinking responsibilities when we must be shouldering the responsibilites together.

Technically it is correct, but I cant help but to think that it is hardly my fault that the error occured, and it was only realised only at this point.

We had needed sets of fabric walls for a customer, and the according to this colleague 1 month ago, the vendor who is building these special walls for us will be the one purchasing the specific fabrics.

Then 1 month later, yesterday morning, this colleague asked me whether I had purchased the fabric for the specialist walls, and of course I said no, he was the one who said the specialist will buy it.

Now the fabric is out of stock.

The client had already confirmed on the fabric and now I cant find anything similar at all.

This colleague wanted us to tell the client that it was out of stock, simple as that, but to me, it is hardly the case. There had been some sever cockups, mostly due to the client's indecisiveness and also because I took it for granted that my colleagues will tell me when things go wrong, but they didnt.

I really have to remind myself to trust only myself. But sigh, if I keep doing everything myself, or keep reminding my colleagues, people say I am not a team player and I dont trust my colleagues. Fuck.

Anyway, I cant help but to think we might be able to get the stock if he had remembered to tell the specialist 1 month ago.

Sigh.