Test results will take weeks so I can't update policy

Recently I decided to take a re-advance on my home loan in order to part finance a new vehicle for which I already had a large amount saved for .One of the banks requirements was that I must send them my updated life policy in order for them to make the payout. I then contacted 1life on the 8th of March to update my policy they explained that due to my test results never have been received when I previously included disability cover, i can only update my policy once they receive new results .I knew this as I had told them previously that the nurse did come to take a HIV saliva test but never submitted my results ? So I was aware of this fact and had no problem too get a new test done . I then went on the 13th of March to get my test done at my nearest Lancet laboratory .On Friday the 15th I phoned 1life to confirm when the results should be in the call center agent told me that I must phone again on Monday as it should be by Monday or Tuesday . When I phoned on Monday the call center agent told me that the results might be loaded on the system by close of business but that it makes no difference as I still won't be able to update my policy, since they must first receive a letter from their HIV department before they can do anything on the policy when I asked how long this will take she said she don't know but it can take a week or even longer it just depends when the HIV department gets to it . I had already arranged on Friday after speaking to the call center agent with the car dealership that I will be able to make payment by the 28th march since the bank had told me that as soon as they receive the policy my payment will be made in 48 hours and I was under the impression that I should have my updated policy by Tuesday 18th to sent to the bank . I was never told by the first two 1life call center agents that the results will take weeks. Now I will have to cancel my sale with dealership, cancel my car insurance I already arranged and will even have to pay more on the car as the special ends March . All this because somebody never did there job in the beginning and one gave my the correct information afterwards .Very disappointed and humiliated as the dealership must now think I'm was lying.