Claiming and redeeming vouchers not so easy

As a Discovery Insure policy holder I get a discount when purchasing a child car seat. Since dealing with claims and getting discount code etc. the last couple of weeks, it has been nothing but difficult and complicated, there's always an issue. My voucher was issued immediately, I added it to my Apple wallet, get to the store, the WIcode do not work, after spending almost 1 hour on a public holiday trying to claim my discount, I call Discovery..they do not work on public holidays (insurance company) I called Tuesday apparently they will issue me a voucher, Thursday I called, I should receive the voucher by the end of the day. Today I called, they are investigating the issue because I am not the only having issues. They cannot tell me when the issue will be resolved, but I will know. Yesterday I had to call them 4 times because their telephone lines are faulty, I report it to the agent I eventually get through to and he is just saying it is strange because I can hear you perfectly..anyway this is not the service Discovery Insure advertise, nothing is easy