After months of assurances but no progress I contacted my bank. I described my issues and sent them every pertinent email (~27 of them). They raised a S75 claim and did point out it could take 2-8 weeks for a decision. After a few weeks and no update I contacted powerhouse. They replied that as I had initiated a S75 claim that my bank would be sending me my refund. Spoke to my bank (Santander, excellent service from them BTW) who said leave it with us, Powerhouse had advised me incorrectly. A few days later Powerhouse emailed me to say my refund would take 3-5 business days to be deposited. In due course I received a full refund. So, if you are getting nowhere with your not fit for purpose credit card purchase definitely contact your card supplier and begin a S75claim, it's worth the time spent. Just a pity that an item purchased on 1st Sep 2020 took until ~ 20th Apr 2021 to resolve.