Contract ended 2021 why are you billing me again in 2025???? YOU ARE ****MERS!!!

So I had a contract for this number *** back in 2019 to 2021 the contract finished and the billing also stopped why all of a sudden im billed R800 u also closed my number???? Its 2025 I never signed up or agreed to a new contract, I didn't reopen it the past 2 months u are billing me??? How come??? This is soooo bad of u as a reputable company its shocking.... your service is embarrassing wow... please cancel that and write that amount off I am not owing you anything... I will NEVER take any contract with you again... I will make sure people know this about you... YOU ARE ****MERS !!!!!!!