cellphone insurance claim

Hi This is my story with finite claims. I submitted my claim on with all required documents . case number IMEi number and ICT number Later on I got a call from Edgar’s centurion , advisesing me that IMEI number is wrong I didn’t understand , that’s when they advised me that because my phone had dual it had 2 IMEI number I call Vodacom again hold for almost 2 hours finally they give me another ITC number Went back to Edgar’s centurion the same day and fill the other claims from. Today 21/06/2019 Got a call I was advised they need an affidavit with saps stamp - I didn’t understand as I send them an affidavit With commissioner of oaths stamp. My question is why didn’t they tell me first time I followed up with them and What’s is so important as both saps stamp and attorneys stamp have the same power as they are both commissioner of stamp.