C.O.
S.:
You can't "fix" it... do NOT pay anyone money to fix it...
Pull your credit report...if there are things that are wrong on it - report it - that's how you fix it.
If it's all true and correct - the only thing that will fix it is time and making payments on time....
if there are things that are NOT yours - like your ex-husband's you should be able to have them removed from your profile...state in your letter to the credit bureau and to the creditor that "this is NOT my credit"...it should be listed solely under Steve Jones, social security #......blah blah
Sorry there isn't a magic wand to make it all right.