I need support in getting timely and clear support from CCleaner provider!

Thank you for your reply.
It was a new licence I bought, but EVERY TIME I renewed they sent me a new one; I was “advised” that this is how things go.
In all the years I dealt with the CCleaner product I always used the same email and other details.
Sadly, since before Christmas, 3 people have replied to my emails, but none of them has acknowledged the facts I stated; they get details wrong while assuring me that they “truly understand how you feel” and a lot of other soppy, standard, empty and ultimately patronizing words.
In their last email, they wash their hands of it, stating I am the victim of fraud, when my product, bought from them, is ACTIVE AND FUNCTIONAL.
I am looking into legal avenues to address the matter, if anyone has any suggestions, I’d love to hear them.
Many thanks for reading this.
Sonia N