First, I suggest that you sent a certified letter to your employer asking that the errors be corrected and corrected W2 be issued within seven (7) days.
Second, if the employer fails to correct the w2, you can report the inaccurate w2/1099 online on the IRS website. If you fail to do so, the government will charge you tax on the full amount claimed by your former employer and allow the former employer to take an undeserved deduction in that amount.
Third, your former employer is apparently misclassifying you to avoid payroll taxes and forcing you to pay self employment tax. This may give rise to a wage/misclassification claim which you can report online to the Division of Labor Standards enforcement and/or pursue with an attorney.