Verification/authentication of caller requested

We received a telephone call from one Lindi Masondo from telephone number *** from Wesbank on my husband's cell phone number. My husband also received a call from *** prior to this call. Lindi informed that she was merely phoning to update our details and wanted to know whether she could phone us from time to time in relation to our recent purchase of a motor vehicle. Can you please confirm that the above telephone number is that of Wesbank and further whether you have a record of your employee Lindi Masondo calling my husband's cell number today between 12:30 and 13:30pm. She could not provide me with a reference for the call. When phoning Wesbank afterwards, your employee Kyle confirmed that no records of a call was on your system and no updates were made. Your urgent response hereto would be appreciated.