No reply from MWEB Business

I sent 2 messages to MWEB without reply. The problem is that I continue to daily receive old emails multiple times. For example, an email which i recevied a few days ago comes back to the MWEB server multiple times. Net result is that all those emails I recevied on that day continue to come back onto MWEB multiple times. Today the total amount of all of those emails was 3199 emails! I would like MWEB to contact me or reply to my messages\emails sent to them to sort this out.