Regret using Investec card for int. air tickets

I recently got international air tickets for my family on my Investec card only to find out after that only my spouse and I qualify for complimentary travel cover and our parents don't. I am also not allowed to buy Zurich's top up cover of R250 because I'm obligated to buying Investec's top-up cover of R550. <br> My other family members wont even be covered for emergencies etc... <br> <br> I'm disappointed because other banks allow everybody to qualify for the complimentary cover. If I could I would return the tickets and use the Std Bank and FNB credit cards but I cant. I also find it unfair that I cannot buy the normal Zurich top up cover of R250 and now have to spend R550 on travel cover.