appalling customer service at the Complaints department

I complained last year about their pastry quality, they promised me a voucher. I had to remind them to send me that voucher. I went to claim the voucher in store and to my embarrassment and after standing in a long que, it declined. I sent them an email to complain and someone called me and promised to sort it out...they never got back to me. I followed up this year and they never got back to me.

on the 09th of September I bough g****s at one of their stores and they looked like they were starting to prune and they had white things on them. I sent them an email with pictures and they said it was Sulphur dioxide that they used to maintain freshness of g****s and control Fungus. in my years of buying those tubs, I have never seen all my g****s covered in that white stuff. they again promised me a voucher which they still have not sent to date.

This is happening for the second time. If they had not promised me that voucher and just apologies or explain the situation I would have been fine with it, It is distasteful to offer a voucher and not deliver. This is about principles.

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