Telkom - Extremely poor service

Very poor services from Telkom. I had a landline account (R845 p/m) with them for more than 3 years. I added 2 Iphones contracts (R810 p/m) onto my account this month. According to Telkom representitave, I will need to pay a prorata amount of R2281.19 for May and June by the 31st of May. But their system automatically gives me a R1000 credit score limit. Thus exceding this amount for both Iphones and landline amounts. Now they suspend my services on the 22nd of May, due to exceding this limit and no payment. If I want to lift the suspension, I need to pay the full amount now. They are aware of the system glitch but are not able to help me unless I pay the full amount. I think this is pathetic, and I still have to deal with this type of service for the remainder of the 2 year contract.