My complaint:
I got a leaflet in from your company with money off vouchers I then went to use one of them today and was told, aw were not accepting them today call back tomorrow and you can use it, but the voucher says I can use it anytime before 4 until the 9th sept, this has really annoyed me today and doubt I will be using your outlets again
Suggested solution:
I'm not sure the remedy, to stop your false advertising would be a good start tho