assurancs wireless ripped me off for 43 dollars Nationwide

I bought a phone from assurance wireless on Nov 10th. I used it until Nov20th with constant malfunctions. On Nov 20th I called them with my complaint. They offered to replace it with the same phone, I declined, stateing that I wanted a different phone. They told me that I couldnt receive a different phone without returning the phone for a refund and purchaseing a different one. So, that is what I did. On Nov 21st, I received the new phone and sent the malfunctioning back for  a refund .On the 5th of Dec ,I called them back to check on my refund . They told me that I did not act within the 14 day acceptance period, so I look at my credit card records and called them back with proof that I had acted within the 14 day acceptance period. They then apologised and told me to give them 72hrs to make the refund and then give them a call back. On Dec 8th I called them back to check on the refund and they then told me that they hadnt received the defective phone and wouldnt give a refund until the phone was returned. These people are hoping that I will give up and let this go . They are sadly mistaken . I will not give up until my money is returned and hopefully consequinces for their actions are delivered.