Blocked my number for not receiving a debit order.

I hope this finds you well. I'm really ****ed about the service i'm getting from Vodacom with my contract number.. Firstly in December they blocked my number when i went to the branch they told me they did not receive my premiums. the consultant checked my banking details all was in order and I had money in my account she could not advise on what was the matter, i had to pay manually for my number to be reopened. This month (January) i got an sms saying i should send an sms to 082111 to check if i'm not in arrears. I sent an sms with my number ( ********** 661) and got confirmation that the number is not in arrears. all of a sudden my number is block. This is not acceptable as i use this number for work purpose now i can not do anything with the phone I think i did a mistake taking a contract with Vodacom, I can not continue to work like this if this does not get sorted i must cancel this contract its not accaptable