Three days waiting for a voucher number

Trying to have a store voucher converted to an e-voucher has been a three day nightmare! Your call centre agents are not helpful at all, not even to the in store service people. Voucher was credited on your system, but no e-voucher issued... And now my money is just gone into some technical system which is still not resolved after 3 days! Absolutely useless and has put me totally off @home for such ridiculous service.