Dopey mistake- any comeback?

It's Christmas, likely the accounts person who can sort this won't be back at work until 4 January.

Long shot but check the terms for what happens to the balance on the card after you make a purchase. It may be possible to get the balance in cash instead of being issued a revised voucher.

So you mailed someone on the 27th and have rang several times since Christmas eve? You're probably being fobbed off because the whoever you're ringing can't actually help and whoever you mailed is still on holidays. Did you mail an actual person's address or a generic 'customer service' address? Is it a coffee shop chain or small place?

The last 2 days were bank holidays, I wouldn't have expected to hear back from them during that time tbh.

Of course you should enquire, it's a lot of money. IMO the response you should expect from the cafe is based on the set up of the place though which you've been unclear about. Are you mailing the person you are speaking to on the phone? Is it a multinational? When you say 'fobbed off' what exactly is the person saying etc.

I doubt a small shop would have a policy for a specific issue like this, it's unlikely to have happened before. If you're close enough just drop in to chat, you'll probably have more luck dealing face to face.

OP right now café owners are literally climbing the walls trying to find staff who don't have Covid or meant to be isolating.

Stop being an a$s, go and chat nicely to them in the middle of NEXT WEEK if you email hasn't been answered by then.

We are in those days post christmas where most places are operating on a skeleton staff - it is normal for owners who are mostly hands on to take some down time after a busy pre chistmas - everyone needs a break sometimes. Some coffee shops near me havent even reopened yet, some are struggling for staff with covid others are taking a break. Im pretty sure if the Op waits until next week he will get his refund. Its evident that the owner is not on the premises at the moment ( as Im sure they would have spoke to him on the phone if they were) or is not checking emails this week - nobody could blame them for taking a break. He is more than likely speaking to a waitress when he calls the premises who cant make the decision to refund him.

If you paid by card maybe ring your bank and try and recall the payment. If you only paid it last week it probably isnt even showing up in the coffee shops bank account yet.