1099-NEC that report WRONG income

An Employer issued me a 1099-NEC with the higher Nonemployee Compensation I actually earn. For the 1099-NEC they created $2428 but my accurate earning is $1595 (I already checked my bank deposit transactions, my checks photocopy, and all other records & others documents income). I tried to contact them and waiting for their response. 
In case they do NOT cooperate to correct it right (Many employers intentionally do it to avoid their taxes), what should I do?