Wonga admin an absolute nightmare-avoid them

I unfortunately paid my Wonga loan 6 days after it was due. This was a result of my salary being paid late. The amount owing came off my account with debi check leaving R104.66 still outstanding, I presume because of interest. I paid the interest, in fact R110 and sent proof of payment. Despite this I continually receive endless amounts of calls telling me to pay my account. I now feel harassed by constant calls. It seems that it take 72 hours for the account to be updated and to reflect the payment. What did I pay extra for for an immediate payment. It is totally unacceptable that after I have paid my account fully that I continue to be harassed by endless amounts of calls coming from a whole range of different numbers. Wonga needs to get its admin right. I will never again have anything to do with this company and letting other people know that should you pay your account late be prepared to have endless harassing calls. It is also embarrassing especially at work and in front of other family and friends.