Capitec standing in for Rain when Iam raising a dispute with them.

I have been treated so bad by Rain data service netowrk and they deducted from my account after 20 calls to stop it and I decided to go to Capitec my bank and dispute the deductions that are going in as card transaction. they gv me a turn around time that they ddn't adhere to, when i am now not expecting their feedback they call me and request for rain invoice. why would my bank when I tell them iam disputing this as its not agreed to they need to see if rain gave me data or not are they now RAIN??? I have give them my dispute reason and why more? I have spoken to rain about 20 calls from my side they never bothered and they told themselves they will deduct weather i like it or not as they have my card details now why Capitec needs their letters than doing what me as Capitec client are requesting them to do?

Iam not happy about the way this went and the fact that my bank I pay every month should be Rains lawyers, Capitec called me and confrenced me with rain that I have called over 20 times and they are not understanding hence last step to go to bank, why should Capitec be rain lawyers what does Capitec get from rain? is Capitec part of Rain? and my dispute is logged by me with Capitec about Rain however they cancel and discard my request to dispute the transaction in my account because of Rain is rain my account holder? does rain pay the bank charges? why would Capitec bring rain into our dispute?

I would like to know why is my dispute not processed?? is it because we are all on Capitec that makes them to do this?