Upgrade telstra mobile plan clearance

Product Name: Upgrade telstra mobile plan clearance
Is this even legal? Telstra automatically upgrading me to a more expensive plan without asking. Currently paying $39 month-to-month ($10 monthly discount at signup) for 15gb. : r/AusFinance clearance, Telstra Revamps Postpaid Plans Again clearance, Upgrade Your Phone or Plan with Telstra clearance, Is this even legal? Telstra automatically upgrading me to a more expensive plan without asking. Currently paying $39 month-to-month ($10 monthly discount at signup) for 15gb. : r/AusFinance clearance, Telstra offers access to Foxtel Now starter packs in mobile plan revamp clearance.