Waiting months for refund

I returned sunglasses on 23 April 2019 and was informed that the amount will be refunded to my Edgars account within 24 hours. In May the amount was still not credited on my account and I was assured it will ve credited within 24hours again. Another month passed and when I received my account the amount was still not credited. I returned to the shop on 13 June and once again they phoned head office. Proof of refund was then sent but the account number they credited wss not mine! Again head office said it would take 24 hours to be rectified. Its 24 June today and my account is STILL not credited! I