Cant get my maturity paid out

My wife money invested in a 5 year bond with African 5 years ago. She visited the Grove branch 1 month before it was due to inform them she wanted to mature the investment and the monies transferred into her Capitec account. She was told to come back in 2 weeks and it would be processed. She did that, but on maturity no money was paid into her account. She went back to the Grove and was told that it had been extended in error and that it would be reversed and would be in her account within 3 days. Five days later and it is still not paid out. Now all she can do is visit the Grove branch every 2 days until someone gives her , her money back. The sad thing is she did another 5 year investment last year and is now concerned about that.