what do I do with my vouchers?

[js1000]

I don't know if i post this msg here... I have BSB fashion stores vouchers worth £50 valid for 2 I got this yrs.
but BSB Westfield where voucher from has been closed n i cant find any stores nearby or online.
what can i do in this case ?
pl. help ?

Sorry no idea but is there a phone number or address on the vouchers that you could phone?

no one picks up the phone