Cannot download Europe map update software to TomT

I purchased a map update service for Europe for my device. I was not able to download the update to my navigation device via my computer and contacted the TomTom Support. I have had two separate call centre sessions wherin I allowed the service person access to my computer. On both occasions they were not able to solve the problem. I then requested a refund of the cost of the Europe map service. This was declined on the basis that my claim is more than 14 days after purchase. TomTom support now abdicate responsibility & suggest that I try a new USB cable. This is totally impractical as the cable has a specific plug on one end to fit the device & a USB plug on the other - it is a device specific cable - which works perfectly in my car. I cannot, therefore merely use another USB cable. I advised them of this and have not received a response. I have no confidence that the call centre knows what to do in a case such as this. I cannot spend any more time on this and will resort to a competitor product. My TomTom support reference number is ***.