********* behaviour

My husband worked for Quatro plast from Dec 2017 to Dec 2018. While employed it was discovered that he has sciatica and also cervical spondolosis. We kept the company informed from day one. Constantly sending certificates and results etc. My husband could not return to work in January. As per a whatsapp msg from one of the partners in January he confirmed that my husband still had a job but no work no pay. In March the HR even wrote a letter for standard bank for our bond. BUT now we need a letter for Old Mutual just a letter to say that he worked at the company and can no longer do his job because of his condition... They say that they can't do that because it's *****???They are refusing all calls and emails from our insurance agent stating that my husband's contract ended in December. How is this *****? According to business law what they are doing is *********. My husband helped them set up the company.. Worked long hours and brought the company to a high operational standard. Is this what employers do?? Where's the compassion and empathy.