Claim approved then declined

Good day

I was in an accident on the 10th Of March 2021 @ 7:20 am on Merrydale Portlands, I was standing on a pedestrian awaiting a car in front of me to turn off into the False bay College however while standing dead still behind the car another came in a speed a delivery bread van drove right into me, a case was opened and I've grained injury of the incident, with me in the car was my 2 daughters one who also got hurt in the accident. So while I settled down after eveything outsurance was called and the matter was explained less than a hour the claim was processed and approved however I notified the consultant that a premium was missed due to there being insufficient funds at the time however 5days later they normally debut thee account again, in this case they declined my claim due to that, I spoke to the consultant of outsurance and she said before the claim was canceled that the unpaid won't be a problem, the next day they called me again and they said the claim was withdrawn due to 1 missed payment, I mean 1 missed payment this is uncalled for and when I asked for a reasonable explanation that was it I haven't missed 1 premium since start of my policy and just 1 mishap and this is what I get from them. Please assist me with the matter as Outsurance is giving me no pleasure in this regard.