Greenlight Policy Cancelled, without prior notification

I have an old mutual greenlight funeral plan, a funeral expenses and life cover, in August, because of financial reasons returned the debit order for the funeral cover, September the debit order went off just fine, and I sent an email to their customer service in regards to the returned D/O, and they said all is well. October on the 23th i received a refund of a 1 month premium, with no notification or email, on the 26th I checked my portfolio and realised that my policies were no longer active and have lapsed, i phoned the call centre to get assistance on reviving the policy, however i was told, the policies have lapsed and they no longer have the greenlight product hence they are unable to reinstate them. I am so disappointed with old mutual as a loyal client and this was my first policy when i started working more than 10 years ago and they just cancelled it, without any notifications to me and a refund of just a mere R436, after so many years of paying diligently and not claiming, now i have to take another policy with expensive premiums and a 6 months waiting period.

I need answers, I am taking this to the financial ombudsman, this is unacceptable, where was it communicated to me that the policies will be cancelled, i think i deserve that courtesy.