Complete Lack of Support from Sage Pastel

I logged a ticket with Sage Pastel - *** on the 9th July about the inability to send invoices, statements and quotes to our customers via the SageOne Accounting platform. Since then, the support has been pathetic with Sage telling me that the issue is related to my mail server. This is not possible as the SageOne product is a cloud based system making use of Sage infrastructure. We are also an IT company and know what we are doing. I have followed up on numerous occasions both telephonically and via email but am still waiting for a \Manager"to call me back. My business has been unable to function for 2 weeks and I am now losing money as a result of this issue. If this is not resolved immediately I will be taking my business elsewhere and will also be seeking legal advice for the recovery of loss of income."""