Voucher /token /change of the meter box issue

This company doesn't value their customers. We had an incident where their meter box was using electricity even when we had dropped or turned off the switches. After 3 months of reporting it their came to change the box unfortunately we had a voucher that we had bought on the 2nd Oct we called and we were advised to speak to our building manager obviously while doing that we cannot stay without electricity we have bought 6 tokens after that as we could not stay away from work due to a pending electricity voucher we have successfully made contact with the building manager and he tried to get the voucher for us firstly the advisor by the name of Angela has no people's skills no empathy and no manner of approach when she talks. As far as I know the T&c's of a voucher are 30 Consumer protection act also allows me to query something within this period of time which we queried on the 2nd of Oct only to be told on the 18th that it's been too long and they will not refund the voucher we don't want the money we need a new token