Fnb you rat

On 12 September 2017 I had purchased TWO 1gig of data via cellphone banking, however I only received ONE 1gig but fnb took for both.. I Had called Fnb numerous times regarding this matter and they still did not resolve this instead they say Vodacom will refund my data.. I have proof of purchase, the fault lies with fnb as they had not put the request thru to Vodacom.. It's been 2 months and I'm still waiting for "administration" to get back to me.. I've spent more money on airtime to call fnb as their line is not a free line.. fnb claimed to have contacted Vodacom the matter was resolved and I should just give them a call to follow up, I called Vodacom and fnb did not do their part.. I called Vodacom and they had logged my complaint same time while I was on a call with them, 10 minutes later I received a called back from Vodacom to say they will refund me out of Good Will.. Why couldn't fnb be so sufficient? Fnb Just received R149 for free.. thank you Vodacom