Bad Service from Vox Telecom

I have been a client of Vox Telecom since 2008, last year August I added Fibre Line to my services. The Fibre is a One year contract, last month (March) I couldnt pay due to the economic challenges and today (07/April) I wanted to pay boudble for the two months. The oustanding amount was R1611,75. When I contacted Vox Help desk I was told that the contract was cancelled and when I looked at the statement, there is additional amount of R2875,00 changed on the statement on the 31st March for cancelation fee. I called to find out why the cancelation fee was done on the 31st March and I was told it was done on the 1st of April but thats not true. For me to activate the services, I must pay the oustanding amount of R4486,73 and then do a new contract. This is really not fair because I think they cancelled the contract to make some money.