Business ADSL - 2 WEEKS and No Resolution??

<p>We have 2x ADSL lines with MWEB Business, and use their SMTP Smart Host to relay some of our mail (we host our own Exchange server). MWEB at some point decided to employ SYNAQ to relay their mails and provide a clean mail service, and has since blocked all senders from our domain in error. It is IMPOSSIBLE to get a clear answer, we receive incorrect "no longer in use" reference numbers, the support desk for Fixed IP customers states we are with the "wrong" MWEB and should be with another division. This is a mess. The "other division" agrees and can see our account, but is unable to assist at all. I even contacted SYNAQ, who agreed to assist, and did absolutely nothing with no further contact. I have been trying to have this issue resolved for 2 weeks now, with no clear resolution in sight, and it is rediculous. "Tweet @MWEBGuy on Twitter" the hold messages say (trust me, I've heard it for days)... @MWEBGuy's account has been disabled by Twitter MWEB, did you know that? Shocking service. 10 out of 10 wouldn't recommend. If you treat all business customers like this, it is a wonder you even have any. I am honestly at a loss of what to do to proceed. If your support staff cannot even get your SMTP address for relay right, what do you do? </p>