Bad customer service from call centre

I can confirm that my installment was paid late because I was in a foreign country and had no access to my bank account. Today at 16:14 I received a call saying that my installment was delayed and underpaid. I attempted to correct the lady, because I paid according to what is on my statement and also attempted to explain my reason for the delay. I was treated with utter disrespect and rudely interrupted. She had respect and clearly did not want to listen or even attempt to understand.