Manager wants to rob me of my hard earned money

I made a lay-bys for a mattress at the bed shop in Bloemfontein Showgate. I later went back for cancellation and was asked to bing proof of bank as I had swiped my card. I was told that it could take up to 14 days for the money to reflect in my acc and I as ok with that. Today it’s 7 working days since I requested the cancellation and refund - in the past week only I went there 3 times - I had to drive 40 km to Bloem and another 40 km back to where I stay just to check if the cancellation was done, each time the sales consultant would tell me that the manager isn’t there, my cancellation wasn’t done and she isn’t fami**** with the system - each of the time I was there, she told me they would call me as soon as it was done, it’s 7 working days l, in fact 9 working days NCOs they work on Saturdays, I have not received even a missed call from them and their office phone doesn’t work. I am disgusted by their service, especially that of that arrogant manager.