Ok guys, I just called Maxis and they clarified the account won't be terminated. It will just be inactive. In my case the account will be terminated on 17 July 2021 which is about 2 months grace period from the expiry of the validity date. So I told the guy on the phone on the sms sent to me which clearly indicated the word "TERMINATED" and he suggested maybe that was an error on their part.

Really terrible to have such error. The person who authorised the message to be delivered to all Hotlink users is incompetent..