Old Mutual,A real thorn in my flesh

A real thorn in my flesh So i have multiple policies with old mutual, and was offered a better policy with better benefits and as a result cancelled the old one i was having, now i recently realised that the one that i cancelled in November last year is still debiting from my account, i immediately informed Old Mutual and completed all the refund forms and submitted them however i still haven't received my refund, it makes me wonder if i struggle now with a mere refund what about my future claims? Is Old Mutual really worth it.... CEA***