Requesting bank details on insecure webpage

After much ado trying to convince this service provider that they do indeed have fibre available in my area (since they had installed it for my neighbour), I am now encountering another stumbling block with ordering their service. Their ordering webpage requests baking details, but is not hosted on a secure site. On enquiry, the response was simply "we haven't had problems with this before so please proceed". Beware that your information is not secure when shared in this way, and this company doesn't care.