What does that mean?:
In order to better assist you we have implemented a new support/customer care system. We therefore kindly request that you visit https://www.avast.com/support Avast Customer and Technical Support and resubmit your question.
You have stolen my money.
You may need to explain further on what you are talking about
It seems to me that a old links was used to submit a ticket or something like that.
Stolen your money?
avast is not a thief.
This sounds to me you agreed with auto-renewal and you where charged for it.
But as Graig asked, provide details.