Poor service, leaving client disappointed

I tried applying for a new contract with Vodacom but was declined because the deal I wanted is a R 29 above my tariff limit of R 600. Mind you I am an existing “ loyal client “ who has an existing data sim contract. The manager told me there is nothing he can do and that I should inconvenience myself by going into the store (which I could have done in the first place if I actually wanted to) and try to speak to them with a difference towards the device for them to reduce the amount (which was not what I requested). This is really poor service considering that I moved from telkom to join their network thinking I will be better off