FNB transaction dispute unresolved after 2 weeks and counting!!

An unauthorized transaction (R2500) went off my account on the 29th June. I called FNB, the lady emailed me the dispute form. I completed it on the same day and emailed it back. I received an email confirming they will respond to my request in 2 business days. On the 5th July I have not heard anything back and followed up. On the 7th they responded saying visa protocols needs to be followed. they have not followed protocol by not getting back to me on the 2nd business day for further action. I then called and spoke to 4 people, each transferring me to the next. This is still not resolved!! FNB where is your customer service!!!! Please get back to me ASAP!!