technical support

noun
1
technical help that a company gives to customers using their computers or other products
پشتیبانی فنی, پشتیبانی تکنیکی
2
a department in a company that provides technical help to its workers or customers
پشتیبانی فنی, خدمات پشتیبانی فنی, مرکز پشتیبانی فنی
I called tech support and they fixed it.
Report the fault to technical support.
She works in tech support.