The R9s was a newer model than the R9. Some people prefer iPhones, some Androids, and some even old style feature phones. Apparently almost nobody liked Windows phones 
You could try delivering a written ACL style letter of demand to Woolies to take back their phone and cancel your contract. A few forum members have posted that they have received circular help (ie a runaround) so long as they were only verbal, but when they got into written communication done right, they got satisfaction.
In addition to an ACL letter of demand you might complain to the TIO. I suggest in either case you refrain from attacking the phone and focus on its features not being what was sold to you.
I only buy outright unlocked phones and use amaysim ‘as you go postpaid’, that suits me well, thanks.
