CreditMantri — Asking for more money - and not provide full information

Address:	Ahmedabad
Website:	creditmantri.com

I have Pais Rs.999.00 + GST to this company to avail services
This company executive had constantly followed up for providing services
and in any conversation, they have not to mention extra amount Rs.449.00 +GST but just after making payment of Rs.999.00 + GST

Immediately in next moment, they have started asking for More Rs.449.00 +GST which amount never explained by their telecaller before

My argument is complete my task in above Amount what I have paid or return my payment

Kindly provide an authorized agency where can I Email this query