Kaya Skin Clinic — suo moto change in service conditions without consent - planning to approach consumer court

I purchased a glycolic peel package (4 session package) for my mother from kaya green park outlet yesterday (15feb2018). After i made the payment, i was given a 1.5 meter long bill (Only for this one package) neatly folded inside a cover. When i opened it on my way back, i found a line at the end stating "this package is valid till jul15 2018". I was taken aback as all my purchases so far have been for lifetime validity which is the reason i buy them without thinking of when i will use them.
I called up the green park outlet but the number was constantly engaged. So, i called up the outlet again today and asked them about this validity. I was shocked to know that this clause applies to all kaya services which was never the case in the past. Apparently it has been added lately (Probably sometime in the past year or so). Richa (The branch manager, i suppose) agreed that she did not mention this clause to me as she was under the impression that i would know of this. I am certain that i would not have bought this package if this validity had been mentioned to me. So, i feel cheated as a service was sold to me without giving all details about it (Esp the important details that would have significantly influenced my decision to buy). When asked to cancel the purchase, she said she cant do that! No service has been used from the package and the request for cancellation was made just next day of the purchase.

Another related concern is for the services already purchased by me - i have come to know that the q-switch packages that i had purchased have also been put under a limited validity clause and that these packages will expire sometime in june2018! I wonder how can the service terms and conditions be changed suo moto by kaya after sale. As i have already mentioned that i wouldnt have purchased any service had i been told of the validity clause.

It has been over 12 days since my mail to their customer care [protected]@kayaindia.net. Despite 2 reminders since then, i am yet to hear any response from them (Except the auto response stating that they will get back in 3 working days). Planning to approach consumer court. If there are others reeling under the same problem (I can see quite a few complaints on this issue) planning to take this legal recourse, pl respond as it will add weight to our case.