We are GTA (Goods Transporter Agency) providing transportation services to our customer which is exempted services under notification no. 05/2017 central tax and does not required to register under GST. Liability of GST payable by service receiver under RCM. But we registered under GST filing Nil return every month (without claiming ITC) due to exempted services
Now our customer is saying mismatch in GST filed by us saying 5% GST will be recovered from us.