Old mutual is busy lying to me and I need my funds.

Since from last year September when I left my employer, old mutual are not willing to pay me my provident funds claim which the company have already submitted the full documents of my claim, first week of January they gave me R10, 000 sum of my savings and they promised me that within 3 to 5 I shall receive my full claim now they are telling me that they will log my complain and there is a problem with the system, the system is saying error. How come today the system say error while they have already gave me some of my savings and they **** to me and to the website of hellow Peter that they will call me and they did not even call me.. Old mutual is busy lying to me each month telling me different story and I have crisis at home my grandfather passed on yesterday and I don't have money to burry him but they are holding my funds for nothing which I don't know and I have full evidence that they are lying to us which I will send.