Very bad service!!

Home loan / Mortgage Life Protection Plan For two years my Home loan d/o was taken from my account without any problem. My mortgage life protection plan is included in this d/o. This morning we received an SMS stating that my mortgage life protection plan was cancelled due to the amount not being collected. My statements clearly indicate that my d/o was collected. I phoned FNB but they are unwilling to assist me and said they did not receive any payment. Clearly, the mistake is on their side and without any communication, they just cancelled my mortgage life protection plan. The consultant was very rude and did nothing to assist. Please assist FNB!!!