Promise not kept and loss of a potential client

I was interested in investing 300k with standardbank shariah I called in spoke to a consultant Nondumiso Maghubane , upon speaking to her she didn’t seem knowledgeable about the product and kept putting me on hold to probably ask on the features of the Shariah compliance law i assume she doesn’t know this product she promised to call me back till today I have not received this call her head superior is Prudence who the consultant said I would receive the call from

It would be smarter if standardbank let consultants who actually are from the religion who understand this as they have been practicing it from birth or educate those not from the religion and once they fully understand allow them to deal with Shariah as us from the Islamic side take this very seriously

I would like an apology letter from the head prudence as up to date I have not received the call My email is as follows ***