Spectranet — Mis Selling

SR[protected]/SR[protected] These are the 2 service request numbers. I changed a plan from 100 Mbps to 500 mbps on 13th Dec 2020. They changed the plan and started charging money, however, the speed remained the same. When I complained then after lot of follow-up I got a call and I was told that there is a slight increase in the speed (now I was getting around 110 mbps) and I was told that I wont get more than this speed on the router that I have and on wifi. For 500 mbps I should use LAN. No one gave me this information while changing the plan.