Telkom's "*****" Business with Clients

I am really concerned with how Telkoms deals with its customers. I app**** to transfer from LTE back to a DSL contract and they ask for a deposit due to my "low credit score" i proved to them via the credit bereau that my credit score is actually excellent. All of a sudden there's "other discrepancies" they themselves don't even know what they are which now makes me feel like they are being dodge and may be doing this to other customers knowing that they won't be questioned. Mind you this is the second time they asked me for this deposit, the first time being when i started an ADSL contract with them, which i didn't question.

They are somehow unable to detail me how they calculate their scores compared to what i actually have. I am now uneasy to pay for something that's not even known by the service provider itself.

This should be attended to since it now looks like it's a **** and this company is out to make us pay for no reason.