People saying they've bought things from riflescopes.com and they were fine is of no bearing. If they sent rings that fit, I would never have sent them back. He told me on the phone before I even sent them back he would refund me the full price. Instead, heinvented a lie and didn't refund me the full price.
First off, why won't they fit? I have never seen weaver style rings that didn't fit weaver style bases. Why on earth would he make up a lie over a paltry 15% which is just $5. Doesn't make sense to me. I am not saying you are not telling the truth, but things just don't add up. But you do what you have to, and what feels right to you.