VODACOM in breech of an agreement

Due to covid, I hadn't work for 5 months. Now that I have started working again, I have a payment plan on place for my cell account as well as my fibre line. The fibre was suspended last Friday. I habe now been told that since the account is more than 90 days in arrears, I need to pay 65% of the outstanding amount to be reconnected. This is a deal that was put in place by the vodacom legal department that they have decided to not honour. I am not in breech. Vodacom is. Really pathetic service