Deductions & credits

Hi, the employer responded to my refund request and mentioned that:

 

1) they can't generate a W2 outside of Paychex Flex as Paychex is their payroll provider and solely responsible for all applicable W2's

2) They can only manage Employer tax, not Employee tax. Individuals are responsible for filing their annual tax return and obtaining any refunds not them.

 

Given there won't be a W-2 generated & no refunds made on the employer's part, is my only remaining option to contact the IRS after 2/15?