Not following up on account payments properly

Hi in the 30th November I got retrenched from my company. I then went to absa to claim from my absa life policy. Which both was approved for 6 months. My installment went off on the 26th Nov for both my loans. Then I received a phone call in Jan saying my one loan is in arrears But they say they have received a payment on 17 Dec also which I never paid. Called absa life and they said they paid them but now what I don't understand is if they received Nov payment from me and Dec payment from absa life and u call me in early Jan how can I be in arrears in the first place plus now I'm receiving msgs saying I must call them about my arrears. Absa life confirmed that they paid both loans in December and will he paying it for the next 6 months and if I'm not working where must I get money to call them for something that is being paid. Plus is this not one company that corresponds with each other of what is happening on accounts. Besides that the woman who called me had some attitude. Inhale more important things to worry about tHan this and I have been a loyal customer to absa for years. To be getting this treatment