Bad service

My phones was suspended on the 9 Feb 2015. Since then I have been trying to get any sort of help from the following people (Simon, Presley, Monique and Theola) and up and till now nothing. They telling me that they cannot find my payment for December that we have paid into the Nashua Mobile account. They only send us the MTN details in the new year. I have to keep on sending my statement, payments through and when I phone that person is not at work. My husband is out of the country and we need these phone to be in working conditions. He is losing clients and I have already lost 2 months e-bucks because of this situation. I do not know what else I can do or speak to.