Bad service- refund me please

I'm so disgusted by this company. Begining of July I bought some items which included a smart speaker. Upon receiving the speaker I didn't like it n I immediately called the company and told them I would like to bring it back as it was not what I expected and they sent a delivery company to fetch the speaker and I haven't been refunded till now. Was asked to send proof of banking details and a copy of my identity document in order to be refunded n I did. No communication from them. I call them from time to time. Today I called and a lady said she is going to contact finance and they will get back to me and never did. I hate ur poor service and lies. I just want my money back