MWEB allowing freeflow of SPAM !

Ditched their poor and expensive Internet service years ago, but was forced to keep my email service which amazingly, worked well. However, their spam filters have now deteriorated to the extent that I'm receiving up to twenty abusive spam mails a day. Reporting it to them (***) multiple times a week for a month now has had no effect beyond receiving the odd desultory email reply, asking if the junk mail was already in my junk box... Following their online guidelines to block spam by logging into my account has also had no effect, despite blocking entire domains and not individual email addresses. Well done MWEB, for keeping up your extra-low standards of customer disservice.