6 Months of debit orders after cancellation

I used MoiMooi spa service for a whole year and then I cancelled my subscription because I had moved. I phoned the call centre and was told that we had to cancel via email. I did just that and received an automated response saying that my subscription had been cancelled. This was 16 June 2018. MoiMooi then still debited my account for another 6 months. I phoned and logged a query via email on 3 January 2019 to stop the debits and requested a refund as I had not used their service in those 6 months. I was told that they would refund me within 60 to 90 days. I have yet to receive any refund. I spoke and emailed Diann countless times who just keeps on giving me a new refund date every time we speak. It's been more than a year now since I asked for my refund and I have been following up every month. The most ridiculous company and customer service of my life. This is so *******!