Limited grocery vouchers from Computicket

I have struggled loading grocery vouchers from Computicket I wanted Checkers vouchers after the system rejected my purchase a tried again after trying multiple values and loading deferent ways the system still rejected I eventually got through to the call center after waiting for what felt like an hour I was told that I cant purchase voucher if it exceeds R5000 I wish the system was setup in a matter where it wont allow you to select that amount of voucher then I will know the extend of the purchase. Bridgette from their Headoffice did give me a call and assisted with my last transaction which was not sent to me electronically straight after the purchase and I am thanking her for that needless to say I wont attempt to purchase from this site again #WIN