CreditMantri — I am complaining about call from executive

I paid to credit manti to resolve one negative issue of my loan account and i got confirmation mail that my payment has been successful and process to resolve my case is initiated. After half an hour i received call from credit manti executive and he asked me to click link forwarded to me credit manti via sms. I clicked the link where i was prompt to subscribe credit reports for future and pay rs499. I told credit mantri caller that i am not interested in subscribing reports you only resolve my loan account issue for which i have already paid, he told than if i don't subscribe this then my issue will not resolve, when i further interacted with him he said its mandatory to subscribe this. When i told him that i will complain about it to your company he apologized. After my call got disconnected i received mail from credit manti that i have opted for dnd and i will not receive any call from credit manti for 30 days, which i had not opted.