Application declined no reason

I app**** for a vodacom contract for a p20 lite. Only to be told my application was declined due to too many lines and the agent coudnt give me a proper answer. I have a good credit record and have an existing contract eith vodacom which is paid on time never missed payments. I am disgusted at the service recieved and would like a decline reveiw urgently. Please do not respond with your automated emails and actually get someone to contact me. Do i have to apply with mtn or telkom which i feel i dont have too as id like contracts with only one provider. Hope this can be resolved and my application approved.