Shine.com — Request for refund and complaint regarding non-transparency to actual amount and false promises saying this would be last payment.

A representative of shine.com called me whether I would want their service. I accepted.
They asked to me to pay Rs 3067 for assigning Customer relationship manager. I paid them the amount in two installments. Later a CRM named as Ms Prachi and Mr Suraj was assigned. They explained me the procedure but did not inform me of the cost I'll have to pay. He first sent me two links to pay for Rs 4673 and Rs 8601. I paid thinking that this much would be the amount. Later he sent me another link for Rs 15785, to which I said this is too expensive, he assured me that this would be last payment, so I paid. Later he sent me a link for Rs 21240 again, at which I was furious and told him that this is unacceptable because he did not inform me the amount that will be charged in total. Mr Suraj pressurised me avail services when I did not want to avail anymore owing to their non-transparency to actual amount and false promises saying this would be last payment. However, I have denied to take any services after this payment, I want my refund! I do not want to avail their services owing to their dishonesty.