Forcing customers of DSL to LTE, paying the same amount for slow Internet (No Fibre/5G yet in our area)))

This year they say that they are going to discontinue copper again on 29/02/2024 , however on 19/02/2024 they disconnected our whole area that was still on copper without notice. We were then forced us over to LTE 4mbp line which is supposedly equal to 20mbp dsl line for the same price when they are advertising faster LTE speeds for cheaper on their website. I cannot even stream, download or go on the internet properly now. How is this fair to charge me the same price for a 4mbp LTE line that paid for a 20mbp dsl line and now i can barely use the internet. I could do everything i needed to do on the internet with my 20mbp dsl line and now im paying the same price for a 4mbp LTE line and i can barely use it. how is this fair to force customers to pay the same for a worst service