in correct debit order.

I have 2 x policies with Liberty Life, that is running on a debit order on the 25th of each month. I was called in December 2019 just before the 20th by a call center agent advising me that one of my policy was two months in arrears. I then ask the agent to take half of the outstanding premiums + December premium of R1298.55 which come to an amount of R1947.55. I also ask her to do the same for the premiums in Jan of 2020. I kept on checking my account to see if Liberty debited the premiums again in January 2020, only to find out that my debit order was not captured again to run as and from 25th of January 2020. Revived a mail this morning saying that i need to pay R3246.65 before 31st January 2020, if they don't received payment by then my policy will laps, bearing in mind that i have this policy sins 2015, and know I need to pay the following. Dec 2019 R1 298,55 Jan 2020 R1 298,55 Feb 2020 R1 298,55 Total due at the end of Jan R3 895,65 Credit amount R649,00 Balance due R3 246,65