Still no response

Follow up: Tevo was kind enough to fetch my vacuum cleaner from the house to inspect it as I want a refund. There is a design flaw which makes the pipe fall out of the machine part the whole time. I was promised a response within a day or two maximum. I cannot not have a vacuum cleaner - the house will be a disaster in no time. I e-mailed a few days after the collection to hear what is happening. Nothing... I e-mailed yesterday as well. Still nothing. It is more than a week now... I just want a response please!