brackets are weak and instructions are off

After owning this rod for just a month or two, it is angling downward at about a 15 degree angle - the plastic brackets are way too weak to hold the standard weight of the rods and curtains. Looks nice at first, but now I have to replace it. Instructions were off. They said to align the rod 0 inches from the edge of the tub, which made it bow out too far over the front of the tub, hitting our bathroom door. Therefore, we had to move it inward about 4" - and had to repair the drywall.

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