Failures of Vodacom

I had 80G (40G + 40G) data contract with Vodacom which I took out last year August 2019, I failed to make payment to towards my contract for three (3) consecutive months due to losing my job as result Vodacom closed my line and I accumulated debt which I was unable to pay for almost 7 months. In March 2020 I began to make payment towards settling my debt until July 2020, by then it was completed settled. In August I received a summons letter that I was still in arrears of R500.14 on my account and required to pay the amount immediately. I then contacted Vodacom to find out the information contained in the summons, only to find that summons was incorrect and not true to my surprise the Vodacom was the one owing the stated amount on summon as I have overpaid my outstanding account. On the 12 of August 2020 I sent an email to followed up with Vodacom on that new information for them return or reimburse me with the R500.14 (waiting was said to be 21 Days) and also request for them to update my credit profile at the Credit Bureau (waiting time was said to be 60 Days). Until today I am still waiting on Vodacom to pay me back and update my profile.