Sun+/Perks

There always seems to be technical issues with there kids free days out or top attractions 2 for 1s. The last two I have tried, there have been technical errors, so I contacted "Customer Dis-Service", to be told that there is a technical issue and that it will be escalated. Being told three times that I will still be able to use the offer once it has been fixed, this later turns out to be not true. The standard response from the advisor "Unfortunately, I am unable to do anything further in regards to the vouchers I'm afraid."