Puma's South Africa's technically poor website and nonchalant attitude to willing customers

I have been trying to make a purchase since Sunday 13th December, 2020 - but each time it rejects my perfectly functional cellphone number and will not process my payment further. I tried calling the customer service number but was told to send an e-mail to technical support. I am still waiting for any kind of response. Are they too busy or successful to care about my intended purchase? Are they simply too useless to sort out technical glitches experienced by customers. I expect like many other badly run companies they will whine about the poor state of South Africa's retail economy - blame circumstances, yet ignore a willing customer.