Vodacom poor service

For a long time Vodacom had put on my prepaid cellphone a welcome tone I never had asked for but had to pay for . When I went to my next Vodacom branch at De Ville Centre in Durbanville Central on February 22 at 11.15 the shop assistant was rude and quarrelsome. After some arguing I got him to delete the welcome tone. For my claim to be refunded I was given the Vodacom Customer Care telephone number. On that number I did not find any option for complaints and was talking to their chat bot only. I still do not know how to get to them for my claim.