My parents are not happy about me making money on Amazon. Is I'm in trouble with Social Security?

It's not Amazon's responsibility to keep track of your business. You need to get this cleared up before you get any further behind on taxes, etc. You can earn some money under disability, but you need to know how much. Deal with it now, prison is not fun and neither is an IRS audit (they can take away everything you own, don't ya know).