I was scammed and I got punished!!!!!!

So a week ago I bought a steam code from steam pumpkin the code was invalid so when i tryed to confront him my account gets suspended and he makes this whole thing where I used the code 5 mins after i bought it but when i tryed to it said it was invalid or already used. Please some one help if you need to see my steam purchase history ill be happy to send it to a mod. My code is 6621PC

if you continue to spam, you might get suspended here too… Ticket for complaint can be created on this LINK