Mishandling of funds

Been working for domino's pizza for a year 15 of March 2020 they decided to close down without any form of notice,, we still waiting for our uif and provident fund papers yesterday I called momentum to check my balance to find out I only have 5100 which means something is not right company was contributing 470 and I was contributing 470 is that even possible,,, a colleague of mine she's been there for 3 years only to find out she has 3600