Very disappointed

I'm very much disappointed in Pick n Pay , i visited Pick n Pay Woodmead on the 27-02-20 to buy 4 items with my smartshopper and i bought them on installments for 36 months and i bought according to my affordability but the invoice does not correspond with what i purchased and I have aired my concern with customer service department twice and i was told it'll be fixed in 72 hours but there's no action until now

Today i received another invoice with the same monthly installments that skyrocketed from nowhere Please fix the problem or let me pay for what i haved purchased and the card

I feel like i commited crime by having a smartshopper and i want it to be cancelled cause it's now becoming a sore Steve ***