Sleep Assist has no service. Shocking

No service from Sleep Assist. My wife went for tests end January. Discovered she needed a CPAP machine. Reports were given to them in February. Up and down with phone calls not been answered, mails not been answered and whatsapp been ignored. Lucky if you get a reply a month later. Still awaiting on what is the shortfall I would need to pay after asking on the 16 April. I eventually went to another Company and got her machine within 3 weeks. Shocking service. DO NOT USE THEM!!