Not happy with service

I cancelled my insurance 21st of January 2021 with first for women. I did receive cancelation letter same day. The consultant I spoke to advise that there is no debit order that will go off in Feb. However, my bank app has a debit order that is scheduled to go off in Feb. How is this possible? . I'm already paying somewhere else but now there is debit order that is scheduled to go off on the 23rd of Feb 2021. I am paying two insurance now, can this be rectified ASAP.