Terrible experience. I purchased Windows 10 Home ...

Terrible experience. I purchased Windows 10 Home from them. My software came in an envelope. The product key is on a label on the envelope but you have to scratch a silver sticker off the product key. Just like a lottery Scratcher. I scratched it off and part of the key came off with it so I can't read the key. I am unable to activate windows because of this. SWS says they can't help me and to contact Microsoft. I contact Microsoft and they were helping until they found out it was an OEM version of windows that is supposed to be sold with hardware builds. They said SWS is not supposed to sell these like this, they are supposed to sell you retail versions. So I call SWS back and they basically tell me they don't know why Microsoft said that, but they can sell them like that and they've been doing it for 10 years. The text on the envelope itself says OEM and that they are not to be sold individually. The bottom line is I got screwed out of $129 after tax by SWS because they sold me software that was not supposed to be sold without a system and as a result the product key can not be replaced. What am I supposed to do about it? Be careful buying from here, they don't even follow their contracts with their vendors and sell OEM products you can't get support for.