ABSOLUTELY USELESS!!!!!!

I've been trying non stop to find a solution to error that occurs when I want to do in-app purchases on Google Play. Ive been making a lot of in-app purchases over the past few months and never had an issue. Now I get a PAYMENT UNSUCCESSFUL .......The requested charge exceeds the maximum spending limit. Please contact your Customer Care at 082111. Which I've done non-stop. Some agents resets on their side then I have to switch my phone off for 10 minutes and thats how it been going for days. Ramon, Nthabiseng, Vanessa, Vinolia to name a few. The last agent escalated it to technical division 24 hours turn around time so I'm waiting.