Tevo Tough vacuum cleaner but inferior quality

On the 01/03/2023, I bought the Bennet Read Tough 12 wet and dry Vacuum cleaner which was highly recommended by their salesperson. Yesterday I took the vacuum back because the pipe cracked when I was vacuuming the carpet. I was told that they cannot accept the product back as its user negligence. Hussein gave me the stainless-steel pipe as it was stronger than the plastic pipe. Then I requested him to show me how to remove and replace the wet and dry floor nozzle attachment and he was struggling to remove it.(Please check the video in the store, I was there from 16:45 till 17:30) I then asked him as the customer what would happen if I forcefully removed this and ended up breaking the nozzle as the material is not as strong as they say. Tevo is selling us lies, their products are not as strong as they claim to be. His excuse was that he does not have nails hence he used the keys to open it.

My query is if I broke it whilst trying to remove it at the end of the day it will be my problem as he also cautioned me not to use force as these attachments are not strong and they break easily. Based on his statement and the experience that I had I am not willing to keep this device. I would like Makro to intervene on my behalf and request for the refund on my behalf. Tevo sold me lies the quality is not what they said it is and this was also confirmed by Hussein's statement that I must not use force as these breaks easily. Makro should also remove this product from their store as is denting their image.

Regards Mangie