Horrible service from Tevo re: Bennet Read Kitchen Boss Blender. Lucia M, Dinesh Santhilal and Sophie Makringe

I purchased a Bennet Read Kitchen Boss Blender at Builders NewMarket in March 2020 and the motor packed up soon afterwards. I returned the blender on 02 June and was promised delivery within 21 days. When this did not happen, I went to Builders again to enquire and was told my blender was still with Tevo. I emailed them on the 10th July to enquire and Lucia M, told me the blender will be at the store the following Thursday. It was not and I had to call again and was told Friday. I collected on Friday, 18th July and to my horror when I got home, The blender sent to me was old and filthy and sticky! The jar had a crack and was leaking. I emailed them back and told them I am sending the blender back to New Market Builders and would appreciate my correct, new blender back. Dinesh Santhilal then apologised for bad service and asked Lucia M to call me as soon as they blender was back in their hands. Needless to say, a week went by and nobody called me back. I then sent another email on Thursday the 23rd July and Lucia M called me on Friday 24th telling me that they still have not fetched my blender from Builders. A week later, my blender is still not with me. I have explained to these people that my business relies on this blender and they do not seem to care. Dinesh Santhilal is the National Service Manager but could not be bothered that I am being inconvenienced. I could have spent my money on any other blender but i chose this and it has become a nightmare. Sophie Makringe is also one of the managers and has been included in the emails but has not said a word!!!! Can these people just refund me my money as they seem to be inlove with their blender and don't want to part with it so i can go purchase a blender I can use and keep to my orders?????