What if my social security number is incorrect on my W-2 and my employer hasn't provided me with a W-2C form yet?

I haven't received a W-2C form yet. I was told by my previous employer that it was my responsibility to file a W-2C but I have found out that is incorrect. They are supposed to do it then send me a copy. I have been asking for one but they are in LA and I am in Sacramento so I don't know if I will get it in time. What can I do? It is close to the deadline so can I file this way but just use my correct social security number then wait for a W-2C and submit that later? Or what options do I have?