Give me back MY money

Five years ago I invested money with Sanlam, with maturity on 1st September 2019. They never communicated with me at all regarding the maturation of the policy, and what my options were. 2.9.19 I contacted the broker and was sent forms to fill in.3.9.19 I was sent an Application to Terminate Plan. 3.9.19 Filled in and sent back to Sanlam. 4.9.19 Sanlam confirms receipt of documents and gives the estimated date of completion as the 17th September.11.9.19 Sanlam rejects application saying that it was signed electronically, and new banking details were completed. Why did they not specify that they did not accept digital signatures?I have had the same bank for 7 years, which was prior to taking out the policy.I was asked to give copies of my ID and a bank statement - and now they estimate the date of completion to be the 25th September. I have lost a great deal of money with this policy, as I deposited the identical amount of money with RSA Bonds. They paid me out in full just after midnight on the 31st August. I received a substantial payout from them, whereas Sanlam is going to pay out a pittance.