How to install OSX with no Optical Drive or USB

Yes but it tells me it's not the ID that was used to purchase it. The upgrade was done without my consent or knowledge.

What they've probably done is clone the hard drive contents from another machine instead of installing a clean system. This would save them a lot of time but leaves you in a bind. Call them and find out what they've done. I'd also examine your invoice to see what you were charged for. Did they give you your old hard drive back? Tell us about the Snow Leopard disk you're trying to use, what color is it and did it come with this machine., Also what are the last three letters of your serial number (located on the bottom of the stand).

What I'm wondering is that if your hard drive was replaced at all or under warranty. Was the repair place an Authorized Apple Service Provider? How long did they have your machine? Also please go here and enter your serial number to see if this drive was covered under warranty: http://www.apple.com/support/imac-harddr...

Does the old drive or new one have Apple logos on them?

I was able to clone the OS from the other iMac I had, this should do until I get a good OS Install DVD.

The first time I had problems with my iMac it was already out of warranty, I got it on 2010 and it failed last year. Back then I ran the install DVD that came with it and the disk utility confirmed that my hard drive had errors and it needed to be replaced. I decided to take it to the authorized mac reseller (in my country we only have authorized resellers, no official Mac stores) and pay for a fix but silly me forgot to take out the original install DVD.

I asked the technician about my hard drive and he said that there was no warranty on the hard drive and that I had to buy a new $250 drive from them (not including the $60 he charged me just to confirm what I already knew). He also said that my drive could be fixed and keep being used but that it could die any day.

Since I didn't have the money I asked him to back my info and restore the system with my drive, keeping in mind that I needed to order a new HD sooner or later. He went ahead and installed ML and a some programs like CS6 (I'm assuming these were unlicensed) without my knowledge. When I got it back I wanted my original Snow Lion back on it but the technician said it would take a week cuz of the work load. Also, they misplaced my original OS install DVD. This was all before I knew of ifixit.

A couple of weeks ago my hard drive crashed and I took it as a personal project. I got the seagate out (It does have the mac logo) and bought a seagate drive with the same specs on a local store. The disc I was using was one burned by a friend, later I tried using my other imac's install DVD (it is the same model) but no luck.

I'm going to check out the serial number on that link as soon as I get home. Thanks for your help!