Appalling & disgusting service

My mother purchased a cell phone cash at the Foschini in V&A Waterfront on 08.08.2019. My mom them took out insurance with the device there and then. She was told by the sales lady she need not setup a debit order as it was R87 and less than R100 so it will cost the company too much to debit this amount & my mom had to make a cash payment monthly at any TFG. So my mom goes to Cavendish foschini on 08.09.2019 and only to be told this cannot be done cash and insurance can only be purchased at point of sale and by debit order. My mom was advised to go to Waterfront to make this payment since they advised this can be done. Monday 09.09.2019 my mom & I decide to go to Canal Walk Foschini where they have a bigger store. Again we are rid this is not possible and to go back to V&A Foschini. Today 11.09.2019 I accompany my mom who is 60 years old to the V&A Foschini to get a better understanding of what is happening. Only to get to the store and there is no paper work related to this insurance and the lady that assisted us was no longer working there and nobody is able to get this resolved. So I called the manager to assist as the sales lady helping us had no idea how to sort this out. The manager Jerusha told the sales lady she also does not know what to do and was not bothered in resolving this. We spent over an hour back & forth with a call centre agent who also had no clue as to how to solve this. The manager was not bother to attend to us. After calling her several times to assist us she said that it was not her fault this was not done & I will have to wait until this clueless assistant tried to resolve this. Again calling the manager to make this a priority as something happen to my mom's phone and we are not covered. The strange thing was we have all the paperwork including a policy number but the store has no trace of this sale. We left the store with our details and the sales lady said she will try resolving this and call us tomorrow but she cannot make any promises. My concern is nobody bothered to take care of our matter and the manager had no interest whatsoever to help us. The managers attitude was appalling and disgusting. My mom was sent from pillar to post and still the issue gas not been resolved. I'm very disappointed in how we we treated. I have no faith that our issue will be resolved.