Disgusted

I submitted a cancellation of purchase together with copy of contract, proof of payment and my banking details on the 31st January 2020, as I am no longer working but they have failed to refund me. On the 10th February they told me about the propabililities of being refunded on the 14th February, but when it didn't happen. On the 17th February I requested a confirmation of the exact date. I was told that payment will be effected on the 21st February 2020, and that it will reflect on my account on the 24th February. Today is the 25th and I have still not received the refund