No communication

I booked at the restaurant for 18 people first week of January, and paid dep of R1800.00. On the 18th of January called the restaurant to cancel my booking and was advised to write and e-mail explaining why I'm cancelling, I did that and the Isle advised as soon as her boss comes in they will let me know when I will get my refund and they never returned my call, called again on Tuesday and she said her boss is not. Finally on Wednesday I spoke to the boss a lady and she advised they had a problem with the cables and couldn't make a transfer but she will do it on Friday which was yesterday the 22 of Jan. Still no payment in my acc and no call from them to say what's going on. Sent them my banking details on Wednesday as they requested but when I called yesterday Isle advised to send my banking g details again she didn't receive them but they didn't call me or send an email to say they didn't receive my banking details. I cancelled my booking in time and the agreed to pay my refund I don't know why I'm being send from pillar to post. All I want is my refund of R1800.00.