MTS / Sistema Shyam TeleServices [SSTL] — Bill claim after 3.5 years of disconnection

Address:	560100
Website:	selfcare.mtsindia.in

I was using a MBlaze product - MiFi whose number is [protected] until October 13, 2012.
Account number - [protected]

Back then, when I checked my My account on selfcare.mtsindia.in, it showed an amount of Rs 5009.

I mailed MTS person - partha.[protected]@mtsindia.in on 16th Oct 2012 to send me a detailed account of how the unbilled amount of Rs. 5009 was calculated.

This is because, as per the below Transaction Id, I have already done the payment.

70843897
71572198
72980991
74486751
74870835
74923544
75995655

However when I checked on its status with MTS Customer Care, they said it is closed. Please note that no one had even contacted me regarding clarification or resolution since the time the complaint was raised.

Latest Payment done on 24th Oct 2012.
Transaction Id: 75995655

Recently, I started receiving text messages from YX-MTSSER on my registered mobile number, which read -

"Your MTS No. [protected] Lokadalat case PLC number is pending GOLDEN chance for your account with 50% discount please pay Rs 5113 call [protected]/[protected] for any support."

Please help and advice.