Poor service Billing department

From when the lock down started I didn't receive a bill neither itemized billing (that I get charged for every month.) I have contacted mtn Service center a few times requesting my bill and itemized billing. They have eventually sent me the bill but still have have not received my itemized billing. I went to MTN in Sasolburg. Could neither be assisted there. The door is locked. They open it and speak to you through a small opening, you may not enter the store. I need my itemized billing to show my business calls.