Unable to contact and no user satisfation

Have been attempting to contact the medical aid to review my plans and change them without any success. Went to their offices in Menlyn Maine and was told to contact their help desk as no visitors allowed due to covid !!! Have called numerous times telephonically and one operator stated she could not assist and I must speak to an advisor. That's not what I required and requested to speak to a manager and was declined - was told to use the digital platform to do the changes. Alas have not been able to achieve anything using this route. Again no success whatsoever. So what do I do now - what avenues can I explore to achieve some service or response to resolve my issue. A very simple one at that. ??????????????????????