Who can you complain to regarding a grievance under the law?

In case a person has given the notice to have their marriage performed by or in the presence of a Marriage Registrar, and the Registrar has refused to issue a certificate of marriage, one can approach the Court. Those residing in the towns of Mumbai, Kolkata, and Chennai can directly approach their respective High Courts, while those not residing there can approach the District Court.(( Section 46. Indian Christian Marriage Act, 1872.)) 

Complaints regarding minor marriages

The Marriage Registrar must wait for 14 days from the date of receiving the notice in order to issue a certificate of receipt of notice, when one party is a minor (below the age of 21 for Christian Marriages). However, in case one cannot wait for 14 days in order to get the certificate, they can file a petition in their respective High Court, to get the certificate of receipt of notice within 14 days of the notice. However, this option is available only to the residents of Kolkata, Mumbai, and Chennai.(( Section 43, Indian Christian Marriage Act, 1872.))