Poor service to the elderly!!

This company has vacuum boots which are for the elderly, my dad is 67 years old and really struggles with swollen ankles, I have ordered and paid for the boots on the 9th of December 2021 and I pad additional money for courier, since then I have been made several promises for delivery including this week but to date 20 January 2022 no delivery has been made, this is very poor seeing that their market is the elderly. I followed up this week Wednesday as no delivery has been made as promised and did not even get a response. The service provided has been the worst I have ever experienced!! You will expect more from a medical service focused on helping the elderly