Hi Shalabh,
The daycare system you mentioned is not used for DTM support. DTM support it typically requested by having a supported user of your organization email clientcare@adobe.com. If you aren't sure who your organizations supported users are, you can always contact your account manager.
Aside from that, I'm happy to try and help you gain access to your account via private message. Please keep in mind, I won't be able to add any of the necessary permissions for your account if they aren't already present. If you'd like me to try and help you, please send me a private message with your email address, DTM company name, and Marketing Cloud organization ID (ends in @AdobeOrg) if you know it.
Thanks,
Jantzen