ABSA themselves ******** customers

A few weeks ago I got an sms to say that they are refunding me on over paid interest. I was automatically skeptical, so I phoned in (to the number in their site, not the sms) and asked if it was a ****. I got a reply to say that it wasn't and that I should email this email address (one which they gave me). Still skeptical, I emailed and asked about the refund and they asked me for simple things. ID number, contact, make and model of the vehicle. Which I sent. Then, I get another email, from a different email address, asking for a copy of the sms and my bank STATEMENT. A statement?? For what. I sent a screenshot of the sms and I sent them a proof of bank account (as I bank with Capitec). And the make mention that I will receive the refund within 3-5working days. This was about 2weeks ago. Last week, I email and say, hey, what's up. Thought this was sorted. Silence. So today I get ANOTHER sms saying they owe me a refund, naturally I immediately email them and ask what is going on and if they are ******** people. Would the legit not now come and ask for a copy of my ID again, and a bank STATEMENT. Please also note this all happened in the SAME email train, so they HAVE all this info and that is exactly what I rep****. They stole money from me, while I was still paying my car and now they say the actually stole even more than I thought they had. 100% convinced ABSA is ******** people