Hi,
I understand your problem. Pl. write strong email & ask Tatasky to reimburse your account - since u've already paid in advance subscription fee & still 4-5 months of subscription is period is balance.
This is from my experience in October 2013 when Tatasky dropped Neo channels. I asked & got pro-rata refund since I was also annual pack subscriber.
Pl. also note that as other users have pointed out, SSHD4 will mirror SS4 content (Formula 1 & football mainly) so you are not loosing on SSHD4 content. You are right about SSHD1 though, you will miss Indian cricket english commentary & International cricket (excluding India) which will be aired only on SS1 (& will not be aired on SS3).