Account locked out

I need urgent intervention. Ready to head to small claims court this week to get resolution on a R3k plus bill in February month when I thought I had have soft locks in place to ensure I never go over R1,5k. This month are now 5th of the month. Day 4 of my April billing and all 4 lines are soft locked together (under Nashua each line was soft locked individually and worked superbly - very necessary when one voice and one data line are used by a 13 year old). Took 24 individual calls over 2 hours to 808 to eventually get to an operator to release the lines and they can't tell me where it's gone wrong until Tuesday. I will be heading into 14th ave to demand action Tuesday morning. I'm locked into 4 contracts I signed with Nashua and am ready to seek legal action to cancel all of them. I have never been this disappointed/angry with a service provider!!!