Extra small mobile plan telstra Clearance

Product Name: Extra small mobile plan 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 Reveal Revamped Phone Plans - Clearance, EXCLUSIVE: Telstra's new look mobile plans: Unlimited is back! *AT A PRICE » EFTM 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, Change Your Mind And Your Plans At Telstra Clearance.