I had the exact same problem. I emailed them because it’s very annoying. Don’t tell me R104 then charge me R250.The xiaomi air purifier. It showed R104 the first time around, then R250 when I checked out. Changing address didn't make a difference as it showed R104 and R250 randomly for 3 different addresses.
I think synergy just set the bar for buying vouchers.I can only buy 1 x R500 voucher a month
If anyone can assit please let me know, would like to buy another R500 monthly till end of the year
Buying and saving vouchers for when our new born comes for nappies, milk, meds etc in November