What do you do when the Military had incorrect or no record of your service? I have been asked this multiple times.

It's a good question ,everybody MUST get copies of their med records HARD copies,before you ETS.
OTHERWISE it leads to this mess.

Get any paycheck stubs or awards or dd-214 and get with the VA or VFW or American legion to help correct the problem and try your old unit if not try the closes base or guard/reserve units.

Present your DD-214 to the records office. That should list your time of service, MOS, discharge status and relieving CO.

Stop stealing valor. Or produce your DD214

It should have been reviewed by the individual prior to your final DD 214 being issued

SPC Marie when I was shorted 3-4 years in the reserves I just when back to previous units and got sign in sheets and forwarded them

Ok, narrow the field down a bit. What type of info is missing? Medical? Dependant? Career? PIF?

DD214 is the most important document a military member and his or her spouse has. If the DD14 is incorrect you must follow the service rules for proving proof of service.

the reason to keep all of your LES's, I have almost all of them from 29 years, there's a few missing, but if you have just a couple from the missing years, it's enough to start

contact the VA maybe they can help with an address to get the service record corrected (DA 201 files were kept at st louis, don't know about now). You verified your DD 214 when you got out, so that should be enough to get your service record corrected. If you don't have a copy of your DD 214, your home of record state should have a copy.