No service due to stock take

Good day,<br> <br> I have received poor service from Heidelberg MTN, they refused to assist me telephonically due to their stock take. I was advised to phone MTN's call center 808. When I keyed in my cellphone number the 'machine' said that my number is not a valid contract number.<br> <br> I phoned Heidelberg Mall shop again, at first they did not answer, and then they gave me bad attitude and said I must visit the shop in the morning.<br> <br> I don't pay R 800.00 a month to be treated like this, and to not have access to my cellphone, I work as a medic, and I need my phone 24/7.<br> <br> Please resolve this problem ASAP!!