Non existent issue resolution, terrible customer service.

I tried to activate roamming multiple times. Despite confirmation that roaming was active, it was not working due to some issues. No-one could inform me what the issues were. Subsequently, when I was due for contract renewal/upgrade - I decided to terminate my contract, becasue I was not able to receive service that I required. I placed my termination notice on 30th December. I was than told that for the number to be ported, I have to give 30 days notice (OK). I followed un in meantime, to make sure that the contract was indeed cancelled and was assured that it was. The 30 dasy passed, and nothing happened. My bundle got renewed. I followed up again and was told that there was a system error and resolutin would take 48h. In meantime ANOTHER bundle got loaded (obviously whatever error there was, was not resolved). So I called again and after about one hout and being switched back and forth, they put escallation notice on the system which now will take 72 hours to resolve. It is beyond my comprehension as to why a contract that is already expired cannot be cancelled and what the issues are. I am filing formal complaint - the next step will be Consumer Protection Board