No Refund from ADT - Poor Service

I cancelled the contract we had with ADT-Fidelity via email giving them once months notice as per our contract. Then I see for January, February we have still been charged. I contacted Fidelity and spoke to Mabatho Pule who sent me an email on March 14th saying that Jan and Feb would be refunded and turn around was 7 working days. This was March 14th and since then she has failed to reply to any of my emails and getting hold of her on the phone is near impossible. This poor service and unprofessional was one of the reasons why I cancelled ADT contract - it is shocking that Mabatho doesn't even bother to reply or acknowledge my queries. This matter needs to be resolved urgently!!!!!!