India Post — Two letters sent by regd ad on 7th june 2017 - sd card not received

I have posted two letters by regd ad on 7th june 2017. As per yr track report, these letters have been delivered to the parties - 1) vijay sales, r city mall, ghatkopar and 2) m/s. L. G. Electronics india pvt. Ltd., a wing (3rd floor), d=3 district centre, saket, new delhi 110 017. Registered a. D. Cards have not been received by me till date. This matter relates to the complaint filed in the consumer court regarding faulty refrigerator sold by l. G. Electronics thru vijay sales, ghatkopar. These ad cards are proof to the complaint lodged. These two companies had not sent ad cards earlier also and were received only after filing written complaint to kurla north post office. Kurla north post office is cooperating to send these ad cards to me.