My daughter is 3 years and having severe cough since last night. Can anyone suggest home remedy for cough relief?

She sent a picture off sarees to my no and he send me the saree in pic if was . nice but when she courierd me it was full damage and it was old blouse full blouse colour went it was nt a good quality and paid her without seeing saree 9000rs thousand rs now she is nt picking my call nt refunding money also and nt all answering my call i cant do anything she is telling me but one who gave the money to me ti ordered saree they are coming near my home and screaming what to do friend

My son is 7 year old he has fever and blocked nose from 3 days. He feels very uncomfortable in the night. I give him relent syrup and otrivin saline drops but still its the same. Please suggest some home remedies.