Poor service loosing my hard earn money

Poor service at Rain loosing my hard earn money. On the Febuary this year l upgraded my rain account from R265 package to R595. I was told that the system will automatically move to R595 package as soon as activated. To my surprise the 01 May 2024 my account payment date the outstanding balance on my invoice was R860 l call rain to find out what happened. The reply and said l have two account and have to pay the both or l won't be assisted. I paid R860 and asked them to cancell the R265 and the gave me the ref no ***7. No its the 01 June 2024 and the invoice again R860 when l call them they said l my hold on and they drop the phone, l really don't know what must l do now.