ps. Double check after you've put your claim in and Samsung send you links to redeem the voucher(s). They only sent me £50 for the watch5pro. I've had to chase them up but so far no reply.
Exact same here, got a £50 voucher but can't see who to call, pointless emailing as you get no reply. Always the same with Samsung, usually they cancel sales or the promos are wrong.
I used the form here:
ps. Samsung promotions (in regards to email replies normally say/do whats on the tin, in their original reply they said within 2 days and it was bang on 2 days.
I have also had the claim sorted now, so i got the full £100.