I'm a tailor myself, although retired and know that we in this past of the world tend to disappoint at one point in time or another, but I think he went too far with his actions.

What he did by asking you to test someone else cloths as though its yours is what my boss as also did to someone before in my present.

One just need to pay gradually to get them to work, else once they collect all, they spend it and don't feel comfortable doing your work again, because it's like they've not been paid.