I bought 2 scatter cushions online around April/May 2020

I bought 2 scatter cushions online around April/May 2020 . I paid and the order was confirmed. Later I got a message that only one cushion is available. I told them to cancel because I wanted 2 and will not collect the 1 from the shop. Around June 2020 I eventually got a refund for the 1 cushion they said they do not have. But up until now, I have not received a refund for the other one. I called the call center several times and they all promised to follow up and call me back but no one calls back. One person even insisted they refunded me clearly proving they either don't understand my query or don't read properly. TFG has both the undelivered item and my money. The call center staff are spoke to are just *********** for lack of a better word. They do not value customers nor understand customer service. I hope someone at TFG who value customers will resolve this satisfactory.