I'm furious and not happy with payjoy phones

I'm not happy with payjoy false advertising. They advertise that you get a phone on deposit then pay in installments. At the beginning of this month of June went to pepcel in mdantsane city mall. I asked for this phone. Fine produced all the necessary things they needed. Deal was done and I was told to pay R500 deposit for a samsung ao4e. Then I was told my first installment is within 7 days and it's R99 mind you I chose monthly for my payment plan. Fine I payed the R99 then when I check on the app it says my next installment is on the next 7days hiboo njan. When I chose monthly I knew that I'm only getting paid monthly now every 7days I have to make a payment. No im not happy in fact I don't want this phone anymore. A R2000 phone you end up paying close to R4000 no please contact me payjoy I don't want this phone anymore