FALSE ADVERTISING??

Reveived call from Vodacom to insure my phones that i recently upgraded to - promotion was 2 phones for price of one Huawei PS. Insurance was R50 for both phones. I was told that both phones will be covered but if a claim is presented it will only pay out if the contract sim card was in the phone in question. Upon asking the agent how one sim card can be in 2 phones simultaneously she said that if the phone that is lost or ****** did not have the contract sim that the claim will not be successful. And then offered a premium of R25 for one phone only. She said she has not come across a question like the one i had and could not give me an answer to my question ie: why promote insurance for R50-00 for both phones if one of the pbones would not be covered - how could the sim card be in both phones if you dont know which phone you might have a claim for in the future?