Extremely irate client

I purchased 2 Guess watches on 23rd September, 3 weeks later 1 watch stopped working. I emailed them & the courier collected the watch. I was advised that they did not have any more in stock & they would refund my account by the middle of November. I am still waiting and no response received to my last email. They're very quick to debit your account/credit card but when it's time to do a refund then it's stories upon stories upon waiting til thy kingdom come. I WANT MY MONEY BACK NOW