PLEASE SIMPLIFY MY ACCOUNT!!!!TOO MANY SUBSCIPTIONS!!!

somebody at Avast promised me to simplify my account, would like to agree but cannot response to mail!!!HOW DO I DO THIS!!!

MAIL REFFERENCE (is all i have) 13775320 [ref:_00Db0Z3Sf._5005p2WSdnB:ref ]

https://support.avast.com/nl-nl/article/Account-Subscription/