is the needle hitting the foot or the sewing machine plate? there are a couple different types of plates- one with a small round hole- one with a wider/oblong hole- used for decorative stitching- do you have the correct plate on the machine?
also, are your feed dogs down? sometimes if they are up/engaged- the act of pulling/pushing the fabric fighting against the feed dogs function can cause the needle to be pulled out of placement.
I realize (generic) feet are less expensive---but truly not compared to the cost of repairs needed after the damage they cause to the machine.