Manorama Tell Me Why - Subscription

I started a yearly subscription to Manorama Tell Me Why in March 2007 by filling up a form and sending them a cheque which they have encashed. The cost was Rs. 150 per year and the cheque was for Rs. 170 to cover bank clearance charges as specified in their form. I started receiving issues of Tell Me Why magazine from April 2007 onwards. I have sent in renewal cheques again in Feb 2008 and March 2009, as per reminders and forms sent by them around January in each year; accordingly I expect my subscription to last until March 2010. However, this year I have received a renewal notice from them in October 2009 itself informing that my subscription ends with another three issues. I promptly wrote by e-mail to subscription@mmp.quoting my subscription number and asking them to verify their records. They are now claiming that subscriptions are for the calendar year alone and always end with the December issue. I have written back that this cannot be the case since my renewal data has always been the April issue and I have received no prior intimation of any changes; also, that they should have sent me issues Jan - Mar 2007 if what they claim is correct. The subscription people are now not responding to any of my e-mails.

I want to get an assurance from the publishers that they will honour their subscription contract with me until the last issue of the current yearly subscription, namely, March 2010.

I live in a rural area where such books are hard to obtain and a yearly subscription was the only reliable method to give my child access to this resource. With their present behaviour, I do not feel like trusting them with my hard-earned money.