Old mutual Contact Centre a nightmare to reach

My husband is based overseas at the moment in his home country for medical care as he is dealing with brain cancer. We have an Old Mutual Greenlight cover and with Old Mutual for years, we have a portal where we can change our details. Being overseas, we have been trying to change our banking details on the portal where Old Mutual can do the deduct our premium and pay our annuity monthly, since June this year. The portal is showing that bank details have been changed from Absa to Standard bank, and yet Old Mutual still uses the Old account which is now closed. We have been trying to call Old mutual customer care for the past 10 days to ask for deductions and payments to be done into the new account, the phones are not being picked, if they get picked they get dropped and this is costly for us as we are calling international. We want to pay the premium with direct pay for the month, but we can't get help, even we send emails, we can't get help.