Tds query 194 h

Dear Members,

I have doubt in TDS. we are In CHA business and we are deducting TDS on different payments on behalf of our customers ( Exporters/ Importers ) . Like CFS charges / car bills / Fright/ Transportation. In some cases some of Service providers give credit note to us as an incentive to do business with us. And they are debitng us with TDS U/s 194 H. i Feel it is a Trade Discount . it can't be under 194 H .  pls Advise..

KISHORE